Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		12 Months Ended
	Jun. 30, 2021	Nov. 30, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2017
Income Taxes [Line Items]
GILTI tax recognized					$ 11,900	$ 14,300
U.S.tax on GILTI income, net of foreign tax credits					100
Deferred tax liabilities, gross			$ 13,844	$ 7,584	13,844	7,584
Valuation allowance adjustment					1,000
Valuation allowance			16,486	16,946	16,486	16,946
Undistributed earnings of foreign subsidiaries			213,900	178,200	213,900	178,200
Deferred tax liability, undistributed earnings of foreign subsidiaries								$ 1,800
Undistributed accumulated earnings of foreign subsidiary				14,100		14,100		$ 25,500
Unremitted earnings withholding taxes			1,500		1,500
Additional unremitted earnings withholding taxes			22,500		22,500
Net income taxes paid					7,700	4,300	$ 11,100
Unrecognized tax benefits, income tax penalties and interest accrued			100	0	100	0	0
Penalties and interest accrued			200	100	200	100	100
Unrecognized tax benefits that would impact effective tax rate			1,300	1,200	1,300	1,200	1,400
Reduction for settled tax examinations					0	73	$ 0
Maximum
Income Taxes [Line Items]
Expected change in unrecognized tax benefits statute lapse			300		300
State and Local Jurisdiction
Income Taxes [Line Items]
Valuation allowance			600	700	$ 600	700
State and Local Jurisdiction | Minimum
Income Taxes [Line Items]
Statutes of limitations range					3 years
State and Local Jurisdiction | Maximum
Income Taxes [Line Items]
Statutes of limitations range					4 years
Foreign Tax Authority
Income Taxes [Line Items]
Reduction for settled tax examinations			100	100
Foreign Tax Authority | Minimum
Income Taxes [Line Items]
Increase in unrecognized tax benefits is reasonably possible			100		$ 100
Statutes of limitations range					3 years
Foreign Tax Authority | Maximum
Income Taxes [Line Items]
Increase in unrecognized tax benefits is reasonably possible			200		$ 200
Statutes of limitations range					10 years
United States
Income Taxes [Line Items]
Valuation allowance			13,900	14,900	$ 13,900	14,900
United States | State and Local Jurisdiction
Income Taxes [Line Items]
Valuation allowance			9,648	9,090	9,648	9,090
Net Operating and Capital Loss Carryforward
Income Taxes [Line Items]
Valuation allowance			$ 2,600	2,000	$ 2,600	$ 2,000
DSI Acquisition
Income Taxes [Line Items]
Deferred tax liabilities, gross		$ 17,000
Deferred tax liabilities, intangible assets		4,100
Valuation allowance adjustment		$ (2,500)		$ 1,700
DTS Acquisition
Income Taxes [Line Items]
Deferred tax liabilities, gross	$ 26,400
Deferred tax liabilities, intangible assets	2,400
Valuation allowance adjustment	$ (1,600)