Share-based Payment Arrangement [Abstract] Schedule of stock-based compensation expense recognized Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Debt Disclosure [Abstract] Remainder of 2019 Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year 2020 Long-term Debt, Maturities, Repayments of Principal in Year Two 2021 Long-term Debt, Maturities, Repayments of Principal in Year Three 2022 Long-term Debt, Maturities, Repayments of Principal in Year Four 2023 Long-term Debt, Maturities, Repayments of Principal in Year Five 2024 Long-term Debt, Maturities, Repayments of Principal in Year Six Long-term Debt, Maturities, Repayments of Principal in Year Six Total principal outstanding Long-term Debt, Gross Unamortized debt discount Debt Instrument, Unamortized Discount Unamortized debt issuance costs Unamortized Debt Issuance Expense Finance lease liabilities Finance Lease, Liability Total Long-term Debt Less: current portion Long-term Debt, Current Maturities Total long-term debt, net and other borrowings Long-term Debt, Excluding Current Maturities Interest rate under long-term debt Long-term Debt, Weighted Average Interest Rate, at Point in Time Other Income and Expenses [Abstract] Foreign currency gains (losses) Foreign Currency Transaction Gain (Loss), before Tax Tax indemnification income Tax Indemnification Income Loss Represents the tax indemnification income (loss) earned during the period. Interest income Interest Income, Other Other Other Nonoperating Income Total other income Other Nonoperating Income (Expense) Document And Entity Information [Abstract] Document and entity information. Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Emerging Growth Company Entity Emerging Growth Company Entity Small Business Entity Small Business Entity Ex Transition Period Entity Ex Transition Period Entity Current Reporting Status Entity Current Reporting Status Entity Shell Company Entity Shell Company Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Revenue from Contract with Customer [Abstract] Schedule of disaggregation of revenue Disaggregation of Revenue [Table Text Block] Leases [Abstract] Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] ASU 842 Accounting Standards Update 2016-02 [Member] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Total leased assets Lease, Right-of-Use Asset Lease, Right-of-Use Asset Total leased liabilities Lease, Liability Lease, Liability Property, Plant and Equipment [Abstract] Schedule of property, plant, and equipment, net Property, Plant and Equipment [Table Text Block] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Short-term Debt, Type [Axis] Short-term Debt, Type [Axis] Short-term Debt, Type [Domain] Short-term Debt, Type [Domain] Letter of Credit Letter of Credit [Member] Swingline Loan Swingline Loan [Member] Swingline Loan [Member] Statistical Measurement [Axis] Statistical Measurement [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] LIBOR London Interbank Offered Rate (LIBOR) [Member] Base Rate Base Rate [Member] Leverage Ratio Range Net Leverage Ratio [Member] Net Leverage Ratio [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] 2017 Term Facility 2017 Term Facility [Member] 2017 Term Facility [Member] 2019 Term Facility 2019 Term Facility [Member] 2019 Term Facility [Member] 2017 Revolving Facility 2017 Revolving Facility [Member] 2017 Revolving Facility [Member] 2019 Revolving Facility 2019 Revolving Facility [Member] 2019 Revolving Facility [Member] Revolving Credit Facility Revolving Credit Facility [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Face amount Debt Instrument, Face Amount Debt term Debt Instrument, Term Additional borrowing capacity Debt Instrument, Additional Borrowing Capacity Debt Instrument, Additional Borrowing Capacity Repayments of debt Repayments of Debt Loss on extinguishment of debt Gain (Loss) on Extinguishment of Debt Capitalized debt issuance cost Capitalized Debt Issuance Cost Capitalized Debt Issuance Cost Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Inventory Disclosure [Abstract] Inventory Inventory Disclosure [Text Block] Fair Value Disclosures [Abstract] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Restricted Cash and Cash Equivalents [Axis] Restricted Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Money market Money Market Funds [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Money market Cash and Cash Equivalents, Fair Value Disclosure Total Assets, Fair Value Disclosure Income Tax Disclosure [Abstract] Income tax expense Income Tax Expense (Benefit) Earnings Per Share [Abstract] Net Income Per Common Share Earnings Per Share [Text Block] Accounting Policies [Abstract] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Statement of Cash Flows [Abstract] Operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Net income Net Income (Loss) Available to Common Stockholders, Basic Adjustments to reconcile net income to net cash flows from operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation, amortization and accretion Depreciation, Amortization and Accretion, Net Amortization of debt related costs Amortization of Debt Issuance Costs Loss on extinguishment of debt Provision for bad debt Accounts Receivable, Credit Loss Expense (Reversal) Provision for excess and obsolete inventory Inventory Write-down Stock-based compensation Share-based Payment Arrangement, Noncash Expense Deferred taxes Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities, Deferred Income Tax Expense (Benefit) Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities, Deferred Income Tax Expense (Benefit) Long-term income tax receivable Increase (Decrease) in Income Taxes Receivable Long-term income tax payable and other long-term liabilities Increase (Decrease) in Other Noncurrent Liabilities Other Other Noncash Income (Expense) Increases (decreases) in cash from operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Inventory Increase (Decrease) in Inventories Other current assets Increase (Decrease) in Other Current Assets Accounts payable Increase (Decrease) in Accounts Payable Accrued expenses and other liabilities Increase (Decrease) in Accrued Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Capital expenditures Payments to Acquire Productive Assets Proceeds from sales of assets Proceeds from Sale of Productive Assets Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Proceeds from issuance of long-term debt Proceeds from Issuance of Long-term Debt Payments on long-term debt and other borrowings Repayments of Long-term Debt Proceeds from stock option exercises Payments of Debt Issuance Costs Proceeds from stock option exercises Proceeds from Stock Options Exercised Proceeds from issuance of common stock Proceeds from Issuance of Common Stock Payments for minimum statutory tax withholding related to net share settlement of equity awards Payment, Tax Withholding, Share-based Payment Arrangement Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Effect of foreign exchange rates on cash and cash equivalents Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Net (decrease) increase in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash and cash equivalents, beginning of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and cash equivalents, end of period Long-Term Debt, Net, and Other Borrowings Debt Disclosure [Text Block] Basic weighted-average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Effect of dilutive stock options (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Effect of dilutive restricted stock (in shares) Incremental Common Shares Attributable To Restricted Stock Awards Incremental common shares attributable to restricted stock awards. Diluted weighted-average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Basic income per common share (in dollars per share) Earnings Per Share, Basic Diluted income per common share (in dollars per share) Earnings Per Share, Diluted Antidilutive securities excluded from diluted net income per common share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Operating Leases Lessee, Operating Lease, Liability, Payment, Due [Abstract] Remainder of 2019 Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year 2020 Lessee, Operating Lease, Liability, Payments, Due Year Two 2021 Lessee, Operating Lease, Liability, Payments, Due Year Three 2022 Lessee, Operating Lease, Liability, Payments, Due Year Four 2023 Lessee, Operating Lease, Liability, Payments, Due Year Five Thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Five Total future minimum lease payments Lessee, Operating Lease, Liability, Payments, Due Less: interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Total Operating Lease, Liability Finance Leases Finance Lease, Liability, Payment, Due [Abstract] Remainder of 2019 Finance Lease, Liability, Payments, Remainder of Fiscal Year 2020 Finance Lease, Liability, Payments, Due Year Two 2021 Finance Lease, Liability, Payments, Due Year Three 2022 Finance Lease, Liability, Payments, Due Year Four 2023 Finance Lease, Liability, Payments, Due Year Five Thereafter Finance Lease, Liability, Payments, Due after Year Five Total future minimum lease payments Finance Lease, Liability, Payment, Due Less: interest Finance Lease, Liability, Undiscounted Excess Amount Total Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Land Land [Member] Buildings Building [Member] Machinery, equipment and fixtures Machinery Equipment And Fixtures [Member] Machinery Equipment And Fixtures [Member] Computer software Software and Software Development Costs [Member] Construction in progress Construction in Progress [Member] Property, Plant & Equipment [Line Items] Property, Plant and Equipment [Line Items] Property, plant & equipment, gross Property, Plant and Equipment, Gross Less: accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Total property, plant and equipment, net Property, Plant and Equipment, Net Commitments and Contingencies Disclosure [Abstract] Legal Proceedings and Contingencies Legal Matters and Contingencies [Text Block] Debt Covenant Period [Axis] Debt Covenant Period [Axis] Debt Covenant Period [Axis] Debt Covenant Period [Domain] Debt Covenant Period [Domain] [Domain] for Debt Covenant Period [Axis] Fiscal quarter ending Q3 2019 Q32019 [Member] Q32019 [Member] Q3 2019 to Q2 2020 Q32019toQ22020 [Member] Q32019toQ22020 [Member] Q3 2020 to Q2 2021 Q32020toQ22021 [Member] Q32020toQ22021 [Member] Thereafter Q32021andThereafter [Member] Q32021andThereafter [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] 2019 Facility 2019 Facility [Member] 2019 Facility [Member] Total Net Leverage Ratio Debt Instrument, Covenant Leverage Ratio Debt Instrument, Covenant Leverage Ratio Election to increase the maximum total net leverage ratio, amount Debt Instrument, Covenant Leverage Ratio, Increase Election Amount Debt Instrument, Covenant Leverage Ratio, Increase Election Amount Election to increase the maximum total net leverage ratio, number of times Debt Instrument, Covenant Leverage Ratio, Increase Election Amount, Number of Separate Times Debt Instrument, Covenant Leverage Ratio, Increase Election Amount, Number of Separate Times Basis of Presentation Business Description and Basis of Presentation [Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Leases Lessee, Leases [Policy Text Block] Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] U.S. US Segment [Member] Represents information pertaining to The United States, a reportable segment of the entity. International International Segment [Member] Represents information pertaining to International, a reportable segment of the entity. Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Product revenue, net Product Revenue, Net [Member] Product Revenue, Net [Member] License and royalty revenues License and Royalty Revenues [Member] License and Royalty Revenues [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Revenues Revenue from Contract with Customer, Excluding Assessed Tax Revenue from Contracts with Customers Revenue from Contract with Customer [Text Block] Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock Common Stock [Member] Additional Paid-In Capital Additional Paid-in Capital [Member] Accumulated Deficit Retained Earnings [Member] Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Balance (in shares) Shares, Issued Balance Stockholders' Equity Attributable to Parent Forfeiture of dividend equivalent right Restricted Stock Award, Forfeitures, Dividends Other comprehensive income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Stock option exercises and employee stock plan purchases (in shares) Stock Issued During Period, Shares, Options Exercises During Period and Employee Stock Ownership Plan Stock Issued During Period, Shares, Options Exercises During Period and Employee Stock Ownership Plan Stock option exercises and employee stock plan purchases Stock Issued During Period, Value, Stock Options Exercised and Employee Stock Ownership Plan Stock Issued During Period, Value, Stock Options Exercised and Employee Stock Ownership Plan Vesting of restricted stock awards and units (in shares) Vesting Of Restricted Stock Awards Vesting of restricted stock awards. Vesting of restricted stock awards and units Vesting Of Restricted Stock Awards Value Vesting of restricted stock awards value. Shares withheld to cover taxes (in shares) Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Shares withheld to cover taxes Share-based Payment Arrangement, Decrease for Tax Withholding Obligation Stock-based compensation APIC, Share-based Payment Arrangement, Increase for Cost Recognition Balance (in shares) Balance Stock-Based Compensation Share-based Payment Arrangement [Text Block] Operating Operating Lease, Right-of-Use Asset Finance Finance Lease, Right-of-Use Asset Total leased assets Operating leased liabilities, current Operating Lease, Liability, Current Finance leased liabilities, current Finance Lease, Liability, Current Operating leased liabilities, noncurrent Operating Lease, Liability, Noncurrent Finance lease liabilities, noncurrent Finance Lease, Liability, Noncurrent Total leased liabilities Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Cost of goods sold Cost of Sales [Member] Sales and marketing Selling and Marketing Expense [Member] General and administrative General and Administrative Expense [Member] Research and development Research and Development Expense [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Total stock-based compensation expense Statement of Financial Position [Abstract] Assets Assets [Abstract] Current assets Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Inventory Inventory, Net Other current assets Other Assets, Current Total current assets Assets, Current Property, plant and equipment, net Intangibles, net Finite-Lived Intangible Assets, Net Goodwill Goodwill Deferred tax assets, net Deferred Tax Assets, Net Other long-term assets Other Assets, Noncurrent Total assets Assets Liabilities and stockholders’ equity Liabilities and Equity [Abstract] Current liabilities Liabilities, Current [Abstract] Current portion of long-term debt and other borrowings Accounts payable Accounts Payable, Current Accrued expenses and other liabilities Accounts Payable and Other Accrued Liabilities, Current Total current liabilities Liabilities, Current Asset retirement obligations Asset Retirement Obligations, Noncurrent Long-term debt, net and other borrowings Other long-term liabilities Other Liabilities, Noncurrent Total liabilities Liabilities Commitments and contingencies Commitments and Contingencies Stockholders’ equity Stockholders' Equity Attributable to Parent [Abstract] Preferred stock ($0.01 par value, 25,000 shares authorized; no shares issued and outstanding) Preferred Stock, Value, Issued Common stock ($0.01 par value, 250,000 shares authorized; 39,043 and 38,466 shares issued and outstanding, respectively) Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock Accumulated deficit Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total stockholders’ equity Total liabilities and stockholders’ equity Liabilities and Equity Property, Plant and Equipment, Net Property, Plant and Equipment Disclosure [Text Block] Depreciation and amortization expense Depreciation, Depletion and Amortization, Nonproduction Schedule of maturities of principal obligations under new term facility Schedule of Maturities of Long-term Debt [Table Text Block] Schedule of total net leverage ratio Schedule Of Term Facility Financial Covenants [Table Text Block] Schedule Of Term Facility Financial Covenants [Table Text Block] Schedule of inventory Schedule of Inventory, Current [Table Text Block] Other Income Other Income and Other Expense Disclosure [Text Block] Schedule of other income Schedule of Other Nonoperating Income (Expense) [Table Text Block] Income Statement [Abstract] Cost of goods sold Cost of Goods and Services Sold Gross profit Gross Profit Operating expenses Operating Expenses [Abstract] Sales and marketing Selling and Marketing Expense General and administrative General and Administrative Expense Research and development Research and Development Expense Total operating expenses Operating Expenses Before Gain Loss On Sale Of Assets Operating Expenses Before Gain Loss On Sale Of Assets Operating income Operating Income (Loss) Interest expense Interest Expense Other income Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Net income Net income per common share: Earnings Per Share, Basic and Diluted [Abstract] Basic (in dollars per share) Diluted (in dollars per share) Weighted-average common shares outstanding: Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract] Basic (in shares) Diluted (in shares) Raw materials Inventory, Raw Materials, Net of Reserves Work in process Inventory, Work in Process, Net of Reserves Finished goods Inventory, Finished Goods, Net of Reserves Total inventory Asset Retirement Obligation Disclosure [Abstract] Summary of changes in asset retirement obligations Schedule of Change in Asset Retirement Obligation [Table Text Block] Recent Accounting Pronouncements Recent Accounting Pronouncements [Table Text Block] Recent Accounting Pronouncements [Table Text Block] Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares issued (in shares) Common Stock, Shares, Issued Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Operating leases, weighted average remaining lease term (in years) Operating Lease, Weighted Average Remaining Lease Term Finance leases, weighted average remaining lease term (in years) Finance Lease, Weighted Average Remaining Lease Term Operating leases, weighted average discount rate Operating Lease, Weighted Average Discount Rate, Percent Finance leases, weighted average discount rate Finance Lease, Weighted Average Discount Rate, Percent Operating cash flows from operating leases Operating Lease, Payments Operating cash flows from finance leases Finance Lease, Interest Payment on Liability Financing cash flows from finance leases Finance Lease, Principal Payments Operating leases, ROU assets obtained in exchange for lease obligations Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Finance leases, ROU assets obtained in exchange for lease obligations Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Segment Reporting [Abstract] Segment Information Segment Reporting Disclosure [Text Block] Schedule of income tax expense Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Financial assurance in form of surety bond Financial Assurance In Form Of Surety Bond Represents the amount of financial assurance given in the form of surety bond. Asset retirement obligation liabilities expected, present value Asset Retirement Obligation Liabilities Expected Present Value Represents the amount of expected present value of asset retirement obligations. Asset Retirement Obligations Asset Retirement Obligation Disclosure [Text Block] Number of operating segments (in segments) Number of Operating Segments Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Revenues from external customers Segment Reporting Information [Line Items] Revenues from external customers Operating income Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract] Operating income Other income Leases Lessee, Operating Leases [Text Block] Leases Lessee, Finance Leases [Text Block] Schedule of operating and finance lease assets and liabilities Operating anf Finance Lease Assets and Liabilities [Table Text Block] Operating anf Finance Lease Assets and Liabilities [Table Text Block] Schedule of other information related to leases Other Lease Information [Table Text Block] Other Lease Information [Table Text Block] Schedule of components of lease expense Lease, Cost [Table Text Block] Schedule of future minimum lease payments under operating leases Lessee, Operating Lease, Liability, Maturity [Table Text Block] Schedule of future minimum lease payments under finance leases Finance Lease, Liability, Maturity [Table Text Block] Income Taxes Income Tax Disclosure [Text Block] Schedule of 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 segment information Schedule of Segment Reporting Information, by Segment [Table Text Block] Asset Retirement Obligation [Abstract] Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] Asset retirement obligations, beginning balance Revisions in estimated cash flows Asset Retirement Obligation, Revision of Estimate Accretion expense Asset Retirement Obligation, Accretion Expense Asset retirement obligations, ending balance Operating lease expense Operating Lease, Cost Finance Lease Cost, Amortization of ROU assets Finance Lease, Right-of-Use Asset, Amortization Finance Lease Cost, Interest on lease liabilities Finance Lease, Interest Expense Short-term lease expense Short-term Lease, Cost Total lease expense Lease, Cost Summary of net income per common share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Statement of Comprehensive Income [Abstract] Other comprehensive income: Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Foreign currency translation Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Total other comprehensive income Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent