Income Taxes - Income Before Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Expense Benefit Continuing Operations Income Tax Reconciliation [Abstract]
Federal income tax provision at statutory rate	$ (125)	$ 11,203	$ 20,931
State taxes, net of federal effect	113	747	573
Foreign taxes, net of federal effect	(1,277)	17	(238)
Domestic manufacturing benefit			(1,569)
Foreign Derived Intangible Income ("FDII") Deduction	(2,278)	(2,217)
Global Intangible Low-Taxes Income ("GILTI") inclusion	1,786	113
Non-deductible officer's compensation	826	526
Research & development tax credit	(2,126)	(2,298)	(1,559)
Remeasurement of deferred tax balances, related to the Tax Act		(33)	8,020
Transition tax on foreign earnings, related to the Tax Act		138	(106)
Other	574	54	841
Total income tax expense (benefit)	$ (2,507)	$ 8,250	$ 26,893
Effective tax rate	420.00%	15.00%	45.00%

Foreign derived intangible income (FDII) deduction.

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Global intangible low-taxes income inclusion.

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Tax Cuts and Jobs Act of 2017,change in tax rate, deferred tax assets, provisional income tax benefit.

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Transition tax on foreign earnings.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the difference between reported income tax expense (benefit) and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for qualified production activity.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit).

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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Amount of reported income tax expense (benefit) in excess of (less than) expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to nondeductible expense for award under share-based payment arrangement. Includes, but is not limited to, expense determined to be nondeductible upon grant or after for award under share-based payment arrangement.

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