Ablavar Patent [Member] Ablavar patent Exclusive legal right granted by the government to exploit Ablavar for a period of time specified by law. Ablavar Accounts Payable Property, Plant and Equipment, Current Accounts payable related to property, plant and equipment Carrying value as of the balance sheet date of obligations incurred (and for which invoices have typically been received) and payable to vendors for property, plant and equipment that are used in entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Accrued Freight Costs Current Freight, distribution and operations Carrying value as of the balance sheet date of obligations incurred through that date and payable for freight and distribution costs. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Accrued Liabilities [Line Items] Accrued Expenses Accrued Liabilities [Table] Schedule of the components of accrued liabilities. Accrued Loss on Contracts Due to Product Expiration Accrued loss due to product expiration, associated with the portion of the committed purchases Carrying value, as of the balance sheet date, of loss accrued due to product expiration. Award Type [Axis] Accrued Loss on Contracts Due to Product Expiration Current Accrued loss due to product expiration, associated with the portion of the committed purchases, included in accrued expenses Carrying value, as of the balance sheet date, of loss accrued due to product expiration. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Accrued loss on firm purchase commitment Accrued Loss on Contracts Due to Product Expiration Noncurrent Accrued loss due to product expiration, associated with the portion of the committed purchases, included in other long-term liabilities Carrying value, as of the balance sheet date, of loss accrued due to product expiration due after one year (or beyond the operating cycle if longer). Accrued Rebates Discounts and Chargebacks Current Accrued rebates, discounts and chargebacks Carrying value as of the balance sheet date of obligations incurred through that date and payable for rebates, discounts and chargebacks. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Accrued Research and Development Costs Current Research and development services Carrying value as of the balance sheet date of obligations incurred through that date and payable for research and development expenses. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Amendment Description Active Pharmaceutical Ingredient Agreement [Member] API agreement Represents information pertaining to agreement for Active Pharmaceutical Ingredient and finished products. Amendment Flag Additional Notes [Member] Additional Notes Represents the additional notes issued by the entity. All Countries [Axis] Represents the geopolitical areas recognized by governments of the world as a country. AUSTRALIA Australia Amortization of consent fee Amortization of Consent Fee This element represents the amortization of consent solicitation fee during the reporting period where consent solicitation is an offer by the issuer of a security to change the terms of the security agreement. For example, a bond issuer may ask bondholders if the terms of the indenture may be changed. Consent solicitations are made because security agreements require mutual consent in order to be altered. Capitalized consent fee Represents the capitalized consent fee. Capitalized Consent Solicitation Fee Commitments Guarantor Financial Information Condensed Financial Information Disclosure [Text Block] The entire disclosure of the condensed consolidating financial statements of the parent, issuer, guarantor and non-guarantor subsidiaries. All Countries [Domain] Debt Instrument Covenant Default Provisions Minimum Outstanding Indebtedness for Cross Acceleration Minimum outstanding indebtedness required for cross acceleration under customary events of default provisions Represents the minimum amount of outstanding indebtedness required for declaration as cross-acceleration under the default provisions under the covenants pertaining to debt instruments. Debt Instrument Covenant Interest Coverage Ratio Interest Coverage Ratio Represents the ratio of adjusted earnings before interest, taxes, depreciation and amortization to interest expense, which is necessary to be maintained under the terms of the debt covenants. Debt Instrument Covenant Leverage Ratio Total Leverage Ratio Represents the ratio of total debt to adjusted earnings before, interest, taxes, depreciation and amortization allowed under the terms of the debt covenants. Debt Instrument Covenant Period after Quarter One 2014 [Member] Thereafter The period thereafter the first quarter of 2014. Debt Instrument Covenant Period [Axis] The periods over which the covenants are in effect. Debt Instrument Covenant Period [Domain] The period over which the covenants are in effect. Debt Instrument Covenant Period Quarter Four 2011 [Member] Q4 2011 The period representing the fourth quarter of 2011. Debt Instrument Covenant Period Quarter Four 2012 [Member] Q4 2012 The period representing the fourth quarter of 2012. Debt Instrument Covenant Period Quarter Four 2013 [Member] Q4 2013 The period representing the fourth quarter of 2013. Debt Instrument Covenant Period Quarter One 2011 [Member] Q1 2011 The period representing the first quarter of 2011. Current Fiscal Year End Date Debt Instrument Covenant Period Quarter One 2012 [Member] Q1 2012 The period representing the first quarter of 2012. Debt Instrument Covenant Period Quarter One 2013 [Member] Q1 2013 The period representing the first quarter of 2013. Debt Instrument Covenant Period Quarter One 2014 [Member] Q1 2014 The period representing the first quarter of 2014. Debt Instrument Covenant Period Quarter Three 2011 [Member] Q3 2011 The period representing the third quarter of 2011. Debt Instrument Covenant Period Quarter Three 2012 [Member] Q3 2012 The period representing the third quarter of 2012. Debt Instrument Covenant Period Quarter Three 2013 [Member] Q3 2013 The period representing the third quarter of 2013. Debt Instrument Covenant Period Quarter Two 2011 [Member] Q2 2011 The period representing the second quarter of 2011. Debt Instrument Covenant Period Quarter Two 2012 [Member] Q2 2012 The period representing the second quarter of 2012. Debt Instrument Covenant Period Quarter Two 2013 [Member] Q2 2013 The period representing the second quarter of 2013. Debt Instrument Issue Price as Percentage of Principal Amount Issue price of debt instrument as a percentage of principal amount Represents the debt instrument issuance price, expressed as a percentage of the principal amount of the debt instrument. Debt Instrument Percentage of Original Principal Amount Outstanding after Redemption from Equity Offerings Percentage of the principal amount of the debt instrument which must remain outstanding after the entity has redeemed a portion of the debt instrument with the proceeds from certain equity offerings Represents the percentage of the original principal amount of the debt instrument that must remain outstanding after the entity has redeemed a portion of the debt instrument with net cash proceeds from certain equity offerings. Document Period End Date CANADA Canada Debt Instrument Redemption Period [Axis] The periods over which the redemption price is in effect. Debt Instrument Redemption Period [Domain] The period over which the redemption price is in effect. Debt Instrument Redemption Period Following Receipt of Proceeds from Equity Offerings Redemption period for the entity to redeem the debt instrument following the receipt of cash proceeds from certain equity offerings Represents the redemption period for the entity to redeem the debt instrument following the receipt of cash proceeds from certain equity offerings. Debt Instrument Redemption Period on or after 15 May, 2016 [Member] On or after May 15, 2016 The period on or after May 15, 2016. Debt Instrument Redemption Period Prior to 15 May, 2013 [Member] Prior to May 15, 2013 The period prior to May 15, 2013. Debt Instrument Redemption Period Prior to 15 May, 2014 [Member] Prior to May 15, 2014 The period prior to May 15, 2014. The twelve month period beginning May 15, 2014. Debt Instrument Redemption Period Twelve Month Period Beginning 15 May, 2014 [Member] Twelve month period beginning May 15, 2014 Debt Instrument Redemption Period Twelve Month Period Beginning 15 May, 2015 [Member] Twelve month period beginning May 15, 2015 The twelve month period beginning May 15, 2015. Debt Instrument Redemption Price as Percentage of Principal Amount Redemption price of debt instrument as a percentage of principal amount Represents the redemption price of the debt instrument as a percentage of the principal amount. Entity [Domain] Debt Instrument Redemption Price upon Change of Control as Percentage of Principal Amount Redemption price of debt instrument as a percentage of principal amount upon change of control Represents the redemption price as a percentage of the principal amount at which the debt instrument may be required to be redeemed in the event of a change of control. Debt Instrument Redemption Price with Net Proceeds from Equity Offerings as Percentage of Original Principal Redemption price of the debt instrument if redeemed with the proceeds of certain equity offerings (as a percent) Represents the redemption price of the debt instrument as a percentage of the principal amount if redeemed with net cash proceeds from certain equity offerings. Percentage of the principal amount of the debt instrument which the entity may redeem with the proceeds from certain equity offerings (as a percent) Represents the percentage of the original principal amount of the debt instrument that the entity may redeem with net cash proceeds from certain equity offerings. Debt Instrument Redemption with Net Proceeds from Equity Offerings as Percentage of Original Principal Debt Instrument Variable Rate Base [Axis] The alternative reference rates that may be used to calculate the variable interest rate of the debt instrument. Debt Instrument Variable Rate Base [Domain] Identification of the reference rate that is used to calculate the variable interest rate of the debt instrument. Debt Instrument Variable Rate Base LIBOR [Member] LIBOR The London Interbank Offered Rate (LIBOR) used to calculate the variable interest rate of the debt instrument. Debt Instrument Variable Rate Base Reference Rate [Member] Reference Rate The Reference Rate used to calculate the variable interest rate of the debt instrument. Property, plant and equipment included in accounts payable and accrued expenses Represents the amount of decrease in accounts payable and accrued expenses for property, plant and equipment through non cash transactions. Decrease in Accounts Payable and Accrued Expenses for Property Plant and Equipment Demand Note [Member] Demand note Represent information pertaining to the demand note payable. Document and Entity Information Due from Related Parties Noncurrent Long Term Assets Reclassified to Equity Outstanding receivable from Holdings Represents the amounts due from related parties which were reclassified during the period from long-term assets to equity. Due from parent (see Note 14) Equity in other comprehensive income (loss) of subsidiaries Represents the share of the parent entity in other comprehensive income (loss) of subsidiaries. Equity in Other Comprehensive Income (Loss) of Subsidiaries Existing Notes [Member] Represents the notes previously issued by the entity. Existing Notes Represents the number of intangible assets whose estimated useful life has been revised during the period. Finite Lived Intangible Asset Revision in Useful Life Number of Assets Number of intangible assets whose estimated remaining useful life has been revised Gain Contingency New Claims Filed Number Number of suits filed Represents the total number of new claims filed by the entity pertaining to a gain contingency during the period. Gain (Loss) on Firm Purchase Commitment Loss on firm purchase commitment Represents gain loss on firm purchase commitment during the reporting period. Inventory Current and Noncurrent Total Carrying amount (lower of cost or market) as of the balance sheet date of inventories less all valuation and other allowances. Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of the noncurrent portion of merchandise or goods held by the company that are readily available for sale. Inventory Finished Goods Noncurrent Non-current finished goods Inventory [Line Items] Inventory Non-current raw materials Represents the noncurrent portion of unprocessed items to be consumed in the manufacturing or production process. Also includes purchased parts that will be used as components of a finished product. Inventory Raw Materials Noncurrent Represents the number of years of shelf life of finished goods. Inventory Shelf Life Aggregate inventory shelf life Inventory [Table] Detailed information about the type of inventory held by the entity. Inventory write-down due to product expiration Inventory Write Down due to Product Expiration Charge to cost of goods sold that represents the reduction of the carrying amount of inventory, attributable to product expiration. Lantheus MI Holdings [Member] Represents information pertaining to Lantheus MI Holdings, Inc., the parent of the reporting entity, Lantheus Intermediate. Holdings LMI Unfunded Standby Letter of Credit face amount The stated principal amount of the letters of credit before amendment. Letter of Credit Outstanding Amount Before Amendment Maximum borrowing capacity under standby letter of credit Letters of Credit Maximum Borrowing Capacity Represents the maximum borrowing capacity under the letters of credit. Liability Award [Member] Liability awards Represents the information pertaining to the awards classified as liability by the entity. Line of Credit Facility Maximum Available Increase in Maximum Borrowing Capacity Maximum increase available in the aggregate borrowing capacity Represents the maximum amount by which the maximum borrowing capacity under the line of credit facility can be increased. Line of Credit Facility Payments for Amendment Fees Fees associated with amendment Represents the fees associated with the amendment under the line of credit facility. Machinery Equipment and Fixtures [Member] Machinery, equipment and fixtures Represents the tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment, fixtures. Modified Stock Options [Member] Modified stock options Represents information pertaining to the modified contract that gives the holder the right, but not the obligation, either to purchase or to sell a certain number of shares of stock at a predetermined price for a specified period of time. Number of Guarantor Subsidiaries Number of guarantor subsidiaries Represents the number of guarantor subsidiaries of the entity. Number of Radiopharmacies Owned Number of radiopharmacies owned Represents the number of radiopharmacies owned by the entity. One Trademark with Revised Estimate of Remaining Useful Life [Member] One Trademark with revised estimate of remaining useful life Single trademark for which the entity revised the estimated remaining useful life. Organization Consolidation and Presentation of Financial Statements [Line Items] Business Overview Organization Consolidation and Presentation of Financial Statements [Table] Schedule of organization, consolidation and presentation of financial statements. Other Comprehensive Income (Loss) Tax Portion Attributable to Parent Excluding Foreign Currency Translation Tax effect of the change in accumulated other comprehensive income, that is, the tax effect on items included in other comprehensive income that is attributable to the parent entity but excluding tax effect of the adjustment that results from the process of translating subsidiary financial statements and foreign equity investments into functional currency of the reporting entity during the period. Income tax expense related to items of other comprehensive (loss) income Consent solicitation fee Payment of Consent Solicitation Fee The cash outflow on account of payment of consent solicitation fee during the reporting period where consent solicitation is an offer by the issuer of a security to change the terms of the security agreement. For example, a bond issuer may ask bondholders if the terms of the indenture may be changed. Consent solicitations are made because security agreements require mutual consent in order to be altered. Cash payment to amend the Indenture to modify the restricted payment covenant Performance Based Stock Options [Member] Performance based stock options Represents the performance-based stock options issued under the share-based compensation arrangements. Prior Credit Agreement [Member] Prior credit agreement Represents information pertaining to the prior credit agreement. Repurchase Of Preferred Stock Value Represents the accreted value of the preferred stock repurchased. Repurchase of Series A Preferred Stock Revenue Recognition Revenue Recognition Revenue Recognition Disclosure [Text Block] The entire disclosure for revenue recognition policies of the reporting entity. Schedule of Debt Instrument Financial Covenants [Table Text Block] Schedule of revolving credit facility financial covenants Tabular disclosure of the financial covenants by period related to the revolving credit facility. Summary of Significant Accounting Policies Schedule of Debt Instrument Redemption Price [Table Text Block] Schedule of redemption prices of notes based on a premium percentage on the principal Tabular disclosure of redemption prices of the debt instrument, expressed as a percentage of the principal amount. Schedule of Inventory [Table Text Block] Schedule of inventory, classified in inventory or other long-term assets Tabular disclosure of the carrying amount as of the balance sheet date of current and noncurrent merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production. Entity Well-known Seasoned Issuer Tabular disclosure of the components of property, plant and equipment. Schedule of Property Plant and Equipment Components [Table Text Block] Schedule of Property, plant and equipment, net Entity Voluntary Filers Segment Reporting Information Assets Percentage Represent the assets from a single reportable segment as a percentage of consolidated assets. Percentage of consolidated assets (as a percent) Entity Current Reporting Status Represent the revenue generated from a single reportable segment as a percentage of consolidated revenue. Segment Reporting Information Revenue Percentage Percentage of consolidated revenues (as a percent) Entity Filer Category Settlement and Mutual Release Agreement [Member] Settlement Agreement Represents information pertaining to the Settlement and Mutual Release Agreement. Entity Public Float Intercompany accounts receivable Accounts Receivable, Related Parties, Current Share Based Compensation Arrangement by Share Based Payment Award Fair Value Assumptions Period of Reference Rate for Risk Free Interest Rate Period of U.S. Treasury rate at the date of the grant used as risk-free interest rate assumption Represents the period of the reference rate used to determine risk-free interest rate assumption that is used in valuing an option on its own shares. Entity Registrant Name Share Based Compensation Arrangement by Share Based Payment Award Number of Agreements Effected Number of agreements effected, which were modified Represents the number of award agreements effected, which were modified by the entity during the reporting period. Entity Central Index Key Represents the number of award agreements modified by the entity during the reporting period. Share Based Compensation Arrangement by Share Based Payment Award Number of Agreements Modified Number of agreements modified Share Based Compensation Arrangement by Share Based Payment Award Options Cancellations in Period Options cancelled (in shares) Represents the number of shares under options cancelled during the reporting period. Share Based Compensation Arrangement by Share Based Payment Award Options Cancellations in Period Weighted Average Exercise Price Options cancelled (in dollars per share) Represents the weighted average price of options that were cancelled during the reporting period. Share Based Compensation Arrangement by Share Based Payment Award Options Intrinsic Value [Abstract] Aggregate Intrinsic Value Entity Common Stock, Shares Outstanding Share Based Compensation Arrangement by Share Based Payment Award Options Vested in Period Number of awards vested (in shares) Represents the number of share options (or share units), that vested during the reporting period. Weighted Average Remaining Contractual Term Share Based Compensation Arrangement by Share Based Payment Award Options Weighted Average Remaining Contractual Term [Abstract] Share Based Compensation Arrangements by Share Based Payment Award Options Expiration Term Contractual term The period of time from the grant date until the time at which the share-based option award expires. Spare parts Spare Parts [Member] Represents the tangible personal property used for repair or replacement of failed parts. Tax Indemnification Income Tax indemnification income Represents the tax indemnification income earned during the period. Tax indemnification (expense) income Tax Indemnification Income Expense Represents the amount of tax indemnification (expense) income during the period. Time Based Stock Options [Member] Time based stock options Represents the time-based stock options issued under the share-based compensation arrangements. Accounts Payable and Accrued Liabilities Disclosure [Text Block] Accrued Expenses Document Fiscal Year Focus Document Fiscal Period Focus Intercompany accounts payable Accounts Payable, Related Parties, Current Legal Entity [Axis] Document Type Accounts receivable, net of allowance of $258 and $462 Accounts receivable, net Accounts Receivable, Net, Current Accounts payable Accounts Payable, Current PUERTO RICO Puerto Rico Accrued Professional Fees, Current Accrued professional fees UNITED STATES U.S. Income tax payable Accrued Income Taxes, Current Accrued Marketing Costs, Current Marketing expense Accrued expenses Accrued Liabilities, Current Accrued liabilities Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accumulated depreciation Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Additional Paid in Capital, Common Stock Additional paid-in capital Additional Paid-in Capital Additional Paid-in Capital [Member] Amortization Amortization Adjustments to reconcile net loss to cash flow from operating activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Stock-based compensation Allocated Share-based Compensation Expense Stock-based compensation expense/(benefit) Accounts receivable, allowance (in dollars) Allowance for Doubtful Accounts Receivable, Current Amortization of Intangible Assets Amortization expense Amortization of Financing Costs Amortization of debt related costs Amortization of debt premium Amortization of Debt Discount (Premium) Asset Retirement Obligation, Accretion Expense Accretion expenses Asset Retirement Obligations Asset Retirement Obligations, Noncurrent Asset retirement obligation Balance at the beginning of the period Balance at the end of the period Asset Retirement Obligation, Liabilities Incurred Capitalization Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] Reconciliation of the asset retirement obligations Asset Retirement Obligations Asset Retirement Obligation Disclosure [Text Block] Net decrease due to changes in estimated future cash flows Asset Retirement Obligation, Revision of Estimate Assets, Fair Value Disclosure Assets Current assets Assets, Current [Abstract] Assets Assets [Abstract] Total current assets Assets, Current Total assets Assets Assets Building [Member] Buildings Business Overview Business Description and Basis of Presentation [Text Block] Capitalized Computer Software, Net Capitalized software development costs Cash and Cash Equivalents [Line Items] Cash and cash equivalents Cash Cash on-hand Cash [Member] Cash-on-hand Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Total cash and cash equivalents Cash and cash equivalents, carrying value Cash and Cash Equivalents [Axis] Cash and cash equivalents, fair value Cash and Cash Equivalents, Fair Value Disclosure Certificates of Deposit [Member] Certificate of deposit Commitments Commitments and Contingencies Disclosure [Text Block] Legal Proceedings and Contingencies Commitments and contingencies (see Note 13) Commitments and Contingencies Common Stock Common Stock [Member] Common stock, share outstanding Common Stock, Shares, Outstanding Common stock ($0.001 par value, 10,000 shares authorized; 1 share issued and outstanding) Common Stock, Value, Issued Common stock, share issued Common Stock, Shares, Issued Balance (in shares) Balance (in shares) Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized 401(k) Plan Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Total comprehensive loss Comprehensive Income Comprehensive Income [Member] Condensed Financial Statements, Captions [Line Items] Guarantor Financial Information Guarantor Financial Information Consolidation, Eliminations [Member] Eliminations Construction in Progress [Member] Construction in progress Cost of goods sold Cost of Goods Sold Cost of Sales [Member] Cost of goods sold Total cost of goods sold Cost of Revenue Customer Relationships [Member] Customer relationships Variable rate basis Debt Instrument, Description of Variable Rate Basis Aggregate principal amount outstanding Long-term Debt, Gross Debt Instrument [Line Items] Financing Arrangements Schedule of Long-term Debt Instruments [Table] Debt Instrument, Fair Value Disclosure Estimated fair value of the debt Debt Disclosure [Text Block] Financing Arrangements Financing Arrangements Debt Instrument, Basis Spread on Variable Rate Basis spread on variable rate (as a percent) Repayment of debt Debt Instrument, Decrease, Repayments Debt Instrument, Face Amount Principal amount of debt Face value of debt Debt Instrument, Unamortized Premium Capitalized premium Debt Instrument, Increase, Additional Borrowings Notes issued Debt Instrument, Interest Rate, Stated Percentage Interest rate (as a percent) Deferred Finance Costs, Net Direct financing fees capitalized Direct financing fees capitalized Deferred Finance Costs, Gross Fees associated with amendment, capitalized Deferred Finance Costs, Noncurrent, Net Deferred financing costs Deferred income taxes Deferred Income Tax Expense (Benefit) Deferred tax assets Deferred Tax Assets, Net of Valuation Allowance, Current Deferred revenue Deferred Revenue, Noncurrent Deferred revenue Deferred Revenue, Current Deferred tax assets Deferred Tax Assets, Net of Valuation Allowance, Noncurrent Deferred tax liability Deferred Tax Liabilities, Net, Noncurrent Deferred Tax Liabilities, Net, Current Deferred tax liability Depreciation, Depletion and Amortization Depreciation and amortization Depreciation Depreciation Depreciation expense Stock-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Stock-Based Compensation Dividends, Common Stock, Cash Dividend paid to Holdings (see Note 10) Due from parent Due from Affiliate, Noncurrent Due from Related Parties, Noncurrent Due from parent Effect of Exchange Rate on Cash and Cash Equivalents, Continuing Operations Effect of foreign exchange rate on cash Employee-related Liabilities, Current Compensation and benefits Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition Weighted-average remaining period for recognition of unrecognized compensation costs Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Stock-based compensation expense (income) recognized Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Report Line [Domain] Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Stock Options Total unrecognized compensation costs Employee Severance [Member] Severance Equity Component [Domain] Estimate of Fair Value, Fair Value Disclosure [Member] Total fair value Measurement Frequency [Axis] Fair Value, Hierarchy [Axis] Fair Value, Measurements, Recurring [Member] Recurring basis Fair Value, Measurement Frequency [Domain] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair value of assets measured on recurring basis observable and unobservable inputs Fair Value of Financial Instruments Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Fair Value, Inputs, Level 3 [Member] Significant unobservable inputs (Level 3) Fair Value, Inputs, Level 1 [Member] Quoted prices in active markets (Level 1) Fair Value, Inputs, Level 2 [Member] Significant other observable inputs (Level 2) Finite-Lived Intangible Asset, Useful Life Weighted Average Useful Life Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Amortization Expense, Year Five 2016 Finite-Lived Intangible Assets, Gross Cost Finite-Lived Intangible Assets [Line Items] Intangibles, net Finite-Lived Intangible Assets, Amortization Expense, Year Three 2014 Finite-lived Intangible Assets, Fair Value Disclosure Fair value of intangible asset Finite-lived Intangible Assets Acquired Purchase of U.S., Canadian and Australian territory rights to Ablavar Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Expected future amortization expense related to the intangible assets Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Accumulated Amortization Accumulated amortization Finite-Lived Intangible Assets, Amortization Expense, after Year Five 2017 and thereafter Finite-Lived Intangible Assets, Amortization Expense, Year Four 2015 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2013 Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year Remainder of 2012 Finite-Lived Intangible Assets, Net Net Total Foreign Currency Transaction Gain (Loss), before Tax Foreign currency (losses) gains Gain (Loss) on Disposition of Assets Loss on disposal of long-lived assets Gain Contingencies [Line Items] Legal Proceedings and Contingencies Gain Contingency, Nature [Domain] Proceeds from manufacturer Proceeds from BVL Gain (Loss) Related to Litigation Settlement Gain Contingencies [Table] Gain Contingencies, Nature [Axis] Loss on early extinguishment of debt Gains (Losses) on Extinguishment of Debt General and administrative expenses General and Administrative Expense General and Administrative Expense [Member] General and administrative Geographic Areas, Revenues from External Customers [Abstract] Revenues from external customers Geographical Intersegment, Eliminations [Member] Inter-segment Goodwill Goodwill Gross profit Gross Profit Guarantor Subsidiaries [Member] Guarantor Subsidiary Guarantor subsidiary Impairment of intangible asset Impairment of Intangible Assets, Finite-lived Impairment charge Condensed Consolidated Statements of Comprehensive Loss Income Taxes Income Tax Disclosure [Text Block] Income Taxes Loss before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest (Loss) income before income taxes Income (Loss) from Equity Method Investments Equity in earnings (losses) of affiliates Provision (benefit) for income taxes Income Tax Expense (Benefit) Provision for income taxes Income taxes paid, net of refunds Income Taxes Paid, Net Income tax receivable Income Taxes Receivable, Current Income tax receivable Accounts payable Increase (Decrease) in Accounts Payable Increase (Decrease) in Accrued Liabilities Accrued expenses and other liabilities Increase (Decrease) in Due from Related Parties, Current Due from parent Income tax payable Increase (Decrease) in Income Taxes Payable Increase (Decrease) in Other Noncurrent Liabilities Long-term income tax payable and other long-term liabilities Deferred revenue Increase (Decrease) in Deferred Revenue Accounts receivable Increase (Decrease) in Accounts Receivable Long-term income tax receivable Increase (Decrease) in Other Noncurrent Assets Increase (decrease) in cash from operating assets and liabilities Increase (Decrease) in Operating Capital [Abstract] Income tax receivable Increase (Decrease) in Income Taxes Receivable Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Inventory Increase (Decrease) in Inventories Increase (Decrease) in Stockholder's Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Insurance Settlement [Member] Claim against insurance carriers to recover business interruption losses Intangible Assets Disclosure [Text Block] Intangibles, net Intangibles, net Intangibles, net Intangible Assets, Net (Excluding Goodwill) Interest expense, net Interest Revenue (Expense), Net Interest Payable, Current Accrued interest Interest paid Interest Paid Inventory Write-down Provision for excess and obsolete inventory Inventory, Finished Goods, Net of Reserves Finished goods Inventory, Raw Materials, Net of Reserves Raw materials Inventory Inventory Disclosure [Text Block] Inventory, Noncurrent Other long-term assets Inventory included in other long-term assets Inventory Inventory, Net Inventory Inventory on-hand Inventory Inventory, Work in Process, Net of Reserves Work in process Investment Income, Interest Interest income Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Investment in subsidiaries Unfunded standby Letter of Credit outstanding Letters of Credit Outstanding, Amount Long-term Debt, Type [Domain] Long-term Debt, Type [Axis] Land [Member] Land Legal Proceedings and Contingencies Legal Matters and Contingencies [Text Block] Total current liabilities Liabilities, Current Current liabilities Liabilities, Current [Abstract] Total liabilities Liabilities Liabilities and Stockholder's Deficit Liabilities and Equity [Abstract] Liabilities and (deficit) equity Total liabilities and stockholder's deficit Liabilities and Equity License and other revenues License and Services Revenue Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Current borrowing capacity Line of Credit Facility, Current Borrowing Capacity Current portion of long-term debt Long-term Debt, Current Maturities Long-term Debt, Excluding Current Maturities Long-term debt, net Long-term debt, net of current portion Loss on firm purchase commitment Loss on Contracts Reserve recorded for loss Maximum [Member] Maximum Minimum [Member] Minimum Money Market Funds [Member] Money market funds Money Market Funds, at Carrying Value Money market Long-Lived Assets Long-lived Assets Description of Business Nature of Operations [Text Block] Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Cash provided by operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations Cash provided by operating activities Cash flow from operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Increase in cash and cash equivalents Net Cash Provided by (Used in) Continuing Operations Increase in cash and cash equivalents Cash used in investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations Net Income (Loss) Available to Common Stockholders, Basic Net loss Net loss Net income Net loss Cash used in financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Recent Accounting Pronouncements New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Recent Accounting Pronouncements Non-Guarantor Subsidiaries [Member] Non-Guarantor Subsidiaries Noncash investing and financing activities Noncash Investing and Financing Items [Abstract] Notes Payable, Current Note payable Number of Operating Segments Number of operating segments Operating expenses Operating Expenses [Abstract] Total operating expenses Operating Expenses Reportable segment Operating Segments [Member] Operating (loss) income Operating Income (Loss) Operating (loss) income Operating income (loss) Business Overview Summary of Significant Accounting Policies Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Other Other Noncash Income (Expense) Other current assets Other Assets, Current Other (Expense) Income, net Other Assets, Noncurrent Other long-term assets Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax Foreign currency translation, net of taxes Foreign currency translation Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Other Income and Other Expense Disclosure [Text Block] Other (Expense) Income, net Other Nonoperating Income Other income Total other (expense) income, net Other Nonoperating Income (Expense) Other (expense) income, net Other income, net Other Liabilities, Noncurrent Other long-term liabilities Other Accrued Liabilities, Current Other Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Other comprehensive (loss) income Other comprehensive income Parent Company [Member] Holdings Lantheus Intermediate Patents [Member] Other patents Accrued Expenses Debt issuance costs Payments of Debt Issuance Costs Payments of deferred financing costs Payments for Repurchase of Redeemable Preferred Stock Repurchase of Series A Preferred Stock Capital expenditures Payments to Acquire Productive Assets Payments of Ordinary Dividends, Common Stock Payment of dividend to parent Dividend paid Payment of dividend Asset acquisition Purchase of certificate of deposit Payments to Acquire Restricted Certificates of Deposit Purchase of certificate of deposit 401(k) Plan Pension and Other Postretirement Benefits Disclosure [Text Block] Proceeds from issuance of debt Proceeds from Issuance of Debt Proceeds from issuance of debt, net Due from parent Proceeds from Contributions from Parent Proceeds from Lines of Credit Proceeds from line of credit Borrowings under line of credit Proceeds from Dividends Received Proceeds from dividend Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, net Property, plant and equipment, net Property, Plant and Equipment, Net. Property, plant and equipment, net Property, Plant and Equipment [Line Items] Property, plant and equipment Property, Plant and Equipment, Gross Property, plant and equipment, gross Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, net Property, Plant and Equipment Disclosure [Text Block] Provision for Doubtful Accounts Provision for bad debt Cumulative projected future commitments to Nordion Purchase Obligation Purchase Commitment, Excluding Long-term Commitment [Axis] Purchase Commitment, Excluding Long-term Commitment [Domain] Range [Axis] Range [Domain] Due from Parent Receivables from Stockholder [Member] Operating (loss) income Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract] Related Party Transactions Related Party Transactions Disclosure [Text Block] Related Party Transactions Related Party Transaction [Line Items] Related Party [Domain] Related Party Transactions Related Party [Axis] Repayments of Lines of Credit Payments on line of credit Repayments of line of credit Payment of term loan Repayments of Long-term Debt Payments on term loan Repayments of Notes Payable Payments on note payable Payment of note payable Research and development expenses Research and Development Expense Research and Development Expense [Member] Research and development Acquired in-process research and development Research and Development in Process Restricted investments Restricted Cash and Cash Equivalents Cash and Cash Equivalents [Domain] Restricted Cash and Cash Equivalents, Current Restricted investments, current Restricted Cash and Cash Equivalents, Noncurrent Restricted investments, noncurrent Restructuring Type [Axis] Restructuring Charges Restructuring charges Restructuring Reserve Restructuring reserve Accumulated deficit Retained Earnings (Accumulated Deficit) (Accumulated Deficit) Retained Earnings Retained Earnings [Member] Revenue Recognition, Policy [Policy Text Block] Revenue Recognition Revenues from external customers Revenue from External Customers Revenues Total revenues Revenues Revenues Revenues [Abstract] Revoving Credit Facility Revolving Credit Facility [Member] Revolving Credit Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Exercisable at the end of the period Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Vested and expected to vest at the end of the period Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Expected life Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Exercisable at the end of the period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Outstanding at the beginning of the period Outstanding at the end of the period Schedule of expected future amortization expense related to the intangible assets Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Net product revenues Sales Revenue, Goods, Net Scenario, Unspecified [Domain] Schedule of the information about the company's assets and liabilities measured at fair value on a recurring basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of Change in Asset Retirement Obligation [Table Text Block] Schedule of reconciliation of the company's asset retirement obligations Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Schedule of option activity Schedule of Other Nonoperating Income (Expense) [Table Text Block] Schedule of other income, net Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule of assumptions used for estimating the fair value of each option award on the date of grant using a Black-Scholes valuation model Schedule of Accrued Liabilities [Table Text Block] Schedule of accrued expenses Schedule of Finite-Lived Intangible Assets [Table] Schedule of Condensed Balance Sheet [Table Text Block] Schedule of Consolidating Balance Sheet Information Schedule of Finite-Lived Intangible Assets [Table Text Block] Schedule of intangibles, net Schedule of Condensed Cash Flow Statement [Table Text Block] Schedule of Condensed Consolidating Cash Flows Information Schedule of Cash and Cash Equivalents [Table] Schedule of Consolidating Operations Information Schedule of Condensed Income Statement [Table Text Block] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs, by Report Line [Axis] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Schedule of Condensed Financial Statements [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] Schedule of stock-based compensation expense (income) recognized Schedule of Segment Reporting Information, by Segment [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of selected information for each business segment Schedule of Property, Plant and Equipment [Table] Valuation and Qualifying Accounts Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] Segment, Geographical, Groups of Countries, Group One [Member] International Segment Reporting Information [Line Items] Segment Information Revenues Segment Reporting Information, Revenue for Reportable Segment [Abstract] Segment Information Segment Information Segment Reporting Disclosure [Text Block] Segment, Geographical [Domain] Sales and marketing expenses Selling and Marketing Expense Selling and Marketing Expense [Member] Sales and marketing 9.750% senior subordinated notes due 2017 9.750% Senior Notes Senior Subordinated Notes [Member] Stock-based compensation Share-based Compensation Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward] Weighted Average Exercise Price Aggregate fair value of awards vested (in dollars) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Vesting period Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Options granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Stock-Based Compensation Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Options granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Options exercised (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Options forfeited or expired (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Risk-free interest rate (as a percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Expected volatility (as a percent) Exercisable at the end of the period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment 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awards Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] Black-Scholes inputs used for estimating the fair value of each option award on the date of grant Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Options forfeited or expired (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost Stock compensation expense associated with the modification of option agreements Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Vested and expected to vest at the end of the period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Outstanding at the beginning of the period (in dollars per share) Outstanding at the end of the period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Outstanding at the beginning of the period Outstanding at the end of the period Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Vested and expected to vest at the end of the period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Outstanding at the beginning of the period (in shares) Outstanding at the end of the period (in shares) Options outstanding Award Type [Domain] Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Vested and expected to vest at the end of the period (in dollars per share) Purchase Commitment, Remaining Minimum Amount Committed Remaining purchase commitment Statement [Table] Scenario [Axis] Statement Statement [Line Items] Condensed Consolidated Statements of Stockholder's (Deficit) Equity Condensed Consolidated Statements of Cash Flows Equity Components [Axis] Condensed Consolidated Balance Sheets Geographical [Axis] Stock Options [Member] Stock options Number of shares of common stock issued Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Options exercised (in shares) Stockholder's deficit Stockholders' Equity Attributable to Parent [Abstract] Total stockholder's deficit Balance Balance Stockholders' Equity Attributable to Parent (Deficit) Equity Stockholder's Equity Stockholder's Equity Stockholders' Equity Note Disclosure [Text Block] Balance Stockholders' Equity, Period Increase (Decrease) Subsequent Events Subsequent Events [Text Block] Subsequent Events Subsequent Event Type [Domain] Subsequent Events Subsequent Event [Line Items] Subsequent Event Type [Axis] Subsequent Event [Table] Subsequent Event Subsequent Event [Member] Subsidiary Issuer [Member] LMI Supplemental disclosure of cash flow information Supplemental Cash Flow Information [Abstract] Transmission Service Agreement [Member] Transition Services Agreement Trademarks [Member] Trademarks Type of Restructuring [Domain] Valuation and Qualifying Accounts Weighted Average Weighted Average [Member] Write off of Deferred Debt Issuance Cost Write-off of deferred financing costs Centers for Medicare and Medicaid Services [Member] CMS Represents the Centers for Medicare and Medicaid Services. Incremental Reimbursement Amount Per Technetium Dose Incremental amount, which will be reimbursed for every technetium dose produced Represents the incremental increase in the amount reimbursed for every technetium dose produced from a generator for a diagnostic procedure in a hospital outpatient setting that is reimbursed by Medicare. Low Enriched Uranium Percentage Required for Reimbursement Percentage of low enriched uranium required for production of technetium dose for availing reimbursement Represents the minimum percentage of low enriched uranium that must be used as a source for Moly contained in generators producing product subject to reimbursement under Medicare. Incentive Term Period Period for which the incentive program is expected to be continued Represents the period for which the incentive program is expected to be continued. Internal Revenue Service (IRS) [Member] U.S. BMS [Member] Represents activity related to BMS. BMS Tax Indemnification Agreement [Member] Represents activity related to tax indemnification agreements related to certain tax obligations arising prior to acquisition. Tax Indemnification Income Tax Contingency [Line Items] Uncertain tax positions Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations Tax benefit recognized with the reversal of uncertain tax positions upon expiration of statute of limitations Unrecognized Tax Benefits Reversal of taxes payable Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Asset Reduction in the indemnification receivable from BMS, included in other expense Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions Tax benefit associated with the reversal of uncertain tax positions Income Tax Contingency [Table] Income Tax Authority [Axis] Income Tax Authority [Domain] Counterparty Name [Axis] Counterparty Name [Domain] Contingent Consideration by Type [Axis] Contingent Consideration Type [Domain] INC Research LLC [Member] INC Represents details pertaining to INC Research LLC, with which a master contract research services agreement has been entered into in relation to flurpiridaz F 18 Phase III program. Term of Agreement Agreement term Represents information pertaining to the term of the agreement. Clinical Development Services Agreement Related Costs Costs associated with the agreement Represents the costs incurred related to the clinical development services agreement.