Entity Central Index Key Document and entity information. Document And Entity Information [Abstract] 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 Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Well Known Seasoned Issuer Entity Current Reporting Status Entity Current Reporting Status Entity Voluntary Filers Entity Voluntary Filers Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock Shares Outstanding Entity Public Float Entity Public Float Additional paid in capital common stock net of adjustments. 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, less allowance of $973 and $1,391, respectively Accounts Receivable Net Current Inventory, net Inventory Net Derivative financial instruments Derivative Assets Current Prepaid expenses and other assets Prepaid Expense And Other Assets Current Total current assets Assets Current Property and equipment, net of accumulated depreciation of $83,404 and $47,267, respectively Property Plant And Equipment Net Goodwill Goodwill Other intangible assets, net of accumulated amortization of $77,622 and $53,965, respectively Finite Lived Intangible Assets Net Deferred financing costs Deferred Finance Costs Noncurrent Net Deferred income tax assets Deferred Tax Assets Net Noncurrent Other non-current assets Other Assets Noncurrent Total assets Assets LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities And Stockholders Equity [Abstract] Current Liabilities: Liabilities Current [Abstract] Accounts payable Accounts Payable Current Accrued liabilities Accrued Liabilities Current Current maturities of long-term debt Long Term Debt And Capital Lease Obligations Current Derivative financial instruments Derivative Liabilities Current Total current liabilities Liabilities Current Pension benefit obligations Defined Benefit Pension Plan Liabilities Noncurrent Other Liabilities Other Liabilities Long-term debt, less current maturities Long Term Debt And Capital Lease Obligations Deferred tax liabilities Deferred Tax Liabilities Noncurrent Total liabilities Liabilities Shareholders’ equity: Stockholders Equity Including Portion Attributable To Noncontrolling Interest [Abstract] Common Stock: Common Stock Number Of Shares Par Value And Other Disclosures [Abstract] No par value; 55,000,000 shares authorized, 36,761,362 and 36,534,464 issued and outstanding at December 31, 2017 and 2016, respectively Common Stock Value Paid-in capital Additional Paid In Capital Common Stock Net Of Adjustments Accumulated other comprehensive income Accumulated Other Comprehensive Income Loss Net Of Tax Accumulated earnings Retained Earnings Accumulated Deficit Total shareholders’ equity Stockholders Equity Total liabilities and shareholders’ equity Liabilities And Stockholders Equity Accounts receivable, allowance Allowance For Doubtful Accounts Receivable Current Accumulated depreciation Accumulated Depreciation Depletion And Amortization Property Plant And Equipment Accumulated amortization Finite Lived Intangible Assets Accumulated Amortization Common Stock, par value Common Stock No Par Value Common Stock, shares authorized Common Stock Shares Authorized Common Stock, shares issued Common Stock Shares Issued Common Stock, shares outstanding Common Stock Shares Outstanding Amounts earned from governmental or other organizations relating to awarded sponsored research projects. Income Statement [Abstract] Product revenues Sales Revenue Goods Net Cost of sales Cost Of Goods Sold Gross margin Gross Profit Operating costs and expenses: Operating Expenses [Abstract] Research and development expenses Research And Development Expense Excluding Acquired In Process Cost Reimbursed research and development expenses Research And Development Reimbursements Net research and development expenses Research And Development Expense Acquisition transaction expenses Business Combination Acquisition Related Costs Selling, general and administrative expenses Selling General And Administrative Expense Total operating costs and expenses Operating Expenses Operating income Operating Income Loss Interest expense Interest Income Expense Net Revaluation of derivatives loss Unrealized Gain Loss On Derivatives Gain on settlement of lawsuit Gain Loss On Sale Of Derivatives Foreign currency (loss) gain Foreign Currency Transaction Gain Loss Before Tax Other (loss) income Other Nonoperating Income Expense Earnings before income tax Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest Income tax expense Income Tax Expense Benefit Net income Profit Loss Basic earnings per share Earnings Per Share Basic Diluted earnings per share Earnings Per Share Diluted Weighted average number of shares—basic Weighted Average Number Of Shares Outstanding Basic Weighted average number of shares—diluted Weighted Average Number Of Diluted Shares Outstanding Statement Of Income And Comprehensive Income [Abstract] Net Income Other comprehensive loss, gross of tax: Other Comprehensive Income Loss Before Tax Portion Attributable To Parent [Abstract] Net gain (loss) on pension benefit obligations Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax Foreign currency translation adjustments Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax Unrealized gain (loss) on foreign currency derivative securities Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax Unrealized gain (loss) on commodity derivative securities Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax Other comprehensive loss, gross of tax Other Comprehensive Income Loss Before Tax Portion Attributable To Parent Other comprehensive loss, related tax effects: Other Comprehensive Income Loss Tax [Abstract] Net gain (loss) on pension benefit obligations Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax Foreign currency translation adjustments Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax Unrealized gain (loss) on foreign currency derivative securities Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax Unrealized gain (loss) on commodity derivative securities Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax Other comprehensive loss, related tax effect Other Comprehensive Income Loss Tax Other comprehensive loss, net of tax: Other Comprehensive Income Loss Net Of Tax Comprehensive income: Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest Restricted stock cancelled during period shares. Restricted stock cancelled during period value. Other comprehensive income loss foreign currency transaction and translation adjustment from deferred tax. Other comprehensive income unrealized gain loss on commodity hedge derivatives arising during period net of tax. Statement Of Stockholders Equity [Abstract] Statement [Table] Statement [Table] Equity Components Statement Equity Components [Axis] Equity Component Equity Component [Domain] Common Stock Common Stock [Member] Paid-in Capital Additional Paid In Capital [Member] Loss on Pension Benefit Obligation Accumulated Defined Benefit Plans Adjustment Net Unamortized Gain Loss [Member] Currency Translation Adjustments Accumulated Translation Adjustment [Member] Foreign Currency Hedge Adjustment. Foreign Currency Hedge Adjustment Foreign Currency Hedge Adjustment [Member] Commodity hedge adjustment. Commodity Hedge Adjustment Commodity Hedge Adjustment [Member] Accumulated Earnings Retained Earnings [Member] Statement [Line Items] Statement [Line Items] Beginning Balance Beginning Balance (in shares) Exercise of Common Stock options for cash Stock Issued During Period Value Stock Options Exercised Exercise of Common Stock options for cash (in shares) Stock Issued During Period Shares Stock Options Exercised Tax benefit from Exercises of Common Stock options Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation Cumulative effect of accounting change due to adoption of ASU 2016-09 Cumulative Effect On Retained Earnings Net Of Tax1 Common Stock issued to Board of Directors and employees Stock Granted During Period Value Sharebased Compensation Common Stock issued to Board of Directors and employees (in shares) Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Stock repurchase Stock Repurchased During Period Value Stock repurchase (in shares) Stock Repurchased During Period Shares Stock option compensation Adjustments To Additional Paid In Capital Share Based Compensation Stock Options Requisite Service Period Recognition Cancelation of restricted stock Restricted Stock Cancelled During Period Value Cancelation of restricted stock (in shares) Restricted Stock Cancelled During Period Shares Net gain (loss) on pension benefit obligation, net Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax Currency translation, net Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax Foreign currency hedge, net Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment From Deferred Tax Commodity hedge, net Other Comprehensive Income Unrealized Gain Loss On Commodity Hedge Derivatives Arising During Period Net Of Tax Net income Ending Balance Ending Balance (in shares) Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. Payments for investment in development-stage entity. Payments for cancellation of restricted stock. Statement Of Cash Flows [Abstract] Operating Activities: Net Cash Provided By Used In Operating Activities Continuing Operations [Abstract] Adjustments to reconcile net income to cash provided by operating activities: Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Depreciation and amortization Depreciation And Amortization Deferred income taxes Deferred Tax Expense Benefit Gain on CRS settlement Revaluation of derivatives Unrealized Gain Loss On Derivatives And Commodity Contracts Stock compensation Share Based Compensation Loss on sale of property and equipment Gain Loss On Sale Of Property Plant Equipment Loss from write-off of intangible assets Impairment Of Intangible Assets Finitelived Provision for doubtful accounts Provision For Doubtful Accounts Defined benefit pension plan (income) expense Pension And Other Postretirement Benefit Expense Changes in operating assets and liabilities: Increase Decrease In Operating Capital [Abstract] Accounts receivable Increase Decrease In Accounts Receivable Inventory Increase Decrease In Inventories Prepaid expenses and other assets Increase Decrease In Prepaid Deferred Expense And Other Assets Accounts payable Increase Decrease In Accounts Payable Accrued liabilities Increase Decrease In Accrued Liabilities Net cash provided by operating activities Net Cash Provided By Used In Operating Activities Continuing Operations Investing Activities: Net Cash Provided By Used In Investing Activities Continuing Operations [Abstract] Settlement of derivative financial instruments Payments For Derivative Instrument Investing Activities Investment in subsidiary, net of cash acquired Payments To Acquire Businesses Net Of Cash Acquired Investment in development-stage entity Payments For Investment In Development Stage Entity Purchases of property and equipment Payments To Acquire Property Plant And Equipment Proceeds from the sale of property and equipment Proceeds From Sale Of Property Plant And Equipment Net cash used in investing activities Net Cash Provided By Used In Investing Activities Continuing Operations Financing Activities: Net Cash Provided By Used In Financing Activities Continuing Operations [Abstract] Cash paid for financing costs Payments Of Financing Costs Borrowing of Debt Proceeds From Issuance Of Long Term Debt Repayments of Debt Repayments Of Long Term Debt Cash paid for the cancellation of restricted stock Payments For Cancellation Of Restricted Stock Cash paid for the repurchase of common stock Payments For Repurchase Of Common Stock Excess tax benefit from equity awards Excess Tax Benefit From Share Based Compensation Financing Activities Proceeds from the exercise of Common Stock options Proceeds From Stock Options Exercised Net cash (used in) provided by financing activities Net Cash Provided By Used In Financing Activities Continuing Operations Foreign currency effect on cash and cash equivalents Effect Of Exchange Rate On Cash And Cash Equivalents Continuing Operations Net (decrease) increase in cash and cash equivalents Cash And Cash Equivalents Period Increase Decrease Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Cash paid for interest Interest Paid Net Cash paid for taxes Income Taxes Paid Net Supplemental disclosure of non-cash transactions: Cash Flow Noncash Investing And Financing Activities Disclosure [Abstract] Common Stock issued to directors and employees Stock Issued1 Organization Consolidation And Presentation Of Financial Statements [Abstract] The Company Nature Of Operations Accounting Policies [Abstract] Summary of Significant Accounting Policies and Basis of Presentation Basis Of Presentation And Significant Accounting Policies [Text Block] Financial statement components. Financial Statement Components [Abstract] Details of Certain Financial Statement Components Additional Financial Information Disclosure [Text Block] Business Combinations [Abstract] Business Acquisition Business Acquisition [Axis] Business Acquisition, Acquiree Business Acquisition Acquiree [Domain] Etratech Inc. Etratech Inc. Etratech Inc [Member] Acquisition Business Combination Disclosure [Text Block] Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Debt Disclosure [Abstract] Debt Debt Disclosure [Text Block] Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Accounting for Stock Based Compensation Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Earnings Per Share [Abstract] Earnings per Share Earnings Per Share [Text Block] Commitments And Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments And Contingencies Disclosure [Text Block] Shareholder rights plan. Warrants And Rights Note Disclosure [Abstract] Shareholder Rights Plan Shareholder Rights Plan [Text Block] Segment Reporting [Abstract] Segment Reporting Segment Reporting Disclosure [Text Block] Compensation And Retirement Disclosure [Abstract] Pension and Other Post Retirement Benefit Plans Pension And Other Postretirement Benefits Disclosure [Text Block] Fair Value Disclosures [Abstract] Fair Value Measurement Fair Value Measurement Inputs Disclosure [Text Block]