Income Taxes - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Line Items]
Goodwill impairment	$ 63,000			$ 63,000
Tax benefit related to reclassification of stranded tax effects		$ 4,500
Effective tax rate for income from continuing operations (as a percent)				8.30%	19.50%	19.50%
Change in valuation allowance					$ 600
Income tax expense (benefit) related to Tax Reform Act						$ 3,700
Income tax expense (benefit) for change in tax rate						1,700
Income tax (benefit) expense				$ (6,416)	8,453	11,974
Income tax expense (benefit) from domestic production activities deduction						1,100
Income tax expense (benefit) from stock-based compensation						2,700
Income tax expense (benefit) from release of reserves			$ 1,500
Undistributed accumulated earnings of foreign subsidiary	3,400			3,400
Reasonably expected net unrecognized benefits may be recognized	1,600			1,600
Total amount of net unrecognized tax benefits that would affect the effective tax rate if recognized	3,200			3,200
Amount of unrecognized tax benefit, if recognized, would be offset	1,300			1,300
Income tax penalties and interest accrued related to unrecognized tax benefits	200			200	$ 100
China
Income Taxes [Line Items]
Change in valuation allowance						300
State
Income Taxes [Line Items]
Operating loss carryforward	4,000			4,000
Deferred tax asset not recorded	4,000			4,000
State tax credit carry forwards that expire between 2019 and 2033	2,100			2,100
Foreign | China
Income Taxes [Line Items]
Operating loss carryforward	7,600			7,600
Foreign | Germany
Income Taxes [Line Items]
Operating loss carryforward	13,700			13,700
Foreign | Netherlands
Income Taxes [Line Items]
Operating loss carryforward	3,400			3,400
Foreign | India
Income Taxes [Line Items]
Operating loss carryforward	$ 700			700
Foreign Tax Error | Restatement Adjustment
Income Taxes [Line Items]
Income tax (benefit) expense						$ 700
Maximum
Income Taxes [Line Items]
Estimated income tax expense (benefit) from repatriation tax				$ 900