Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Tax Credit [Line Items]
Unrecognized tax benefits	$ 6,400		$ 6,400
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	$ 800		$ 800
Effective tax rate	31.80%	26.00%	22.80%	23.40%
Deferred income taxes	$ 20,486		$ 20,486		$ 11,108
Unremitted earnings of foreign subsidiaries	12,500		12,500
Unrecognized deferred tax liability on unremitted earnings of foreign subsidiaries	500		500
Internal Revenue Service (IRS) | Tax Years 2011 through 2015 [Member] | Domestic Tax Authority [Member]
Tax Credit [Line Items]
Disallowed research tax credits being litigated	5,700		5,700
Internal Revenue Service (IRS) | Tax Years 2011 through 2019 [Member] | Domestic Tax Authority [Member]
Tax Credit [Line Items]
Research Tax Credits	$ 18,300		$ 18,300