Stockholders' Equity (Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ 1,092,875	$ 908,326	$ 800,672
Net foreign currency translation adjustment	(20,920)	(9,697)	4,531
Actuarial gain (loss) on pension plans	28,125	2,107	(207)
Derivative instrument adjustment	0	0	1,642
Net current-period other comprehensive income (loss)	7,205	(7,590)
Ending Balance	1,381,008	1,092,875	908,326
Accumulated Other Comprehensive (Loss) Income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(501)	7,089	1,123
Ending Balance	6,704	(501)	7,089
Foreign currency items
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(2,401)	7,296
Net foreign currency translation adjustment	(20,920)	(9,697)
Actuarial gain (loss) on pension plans	0	0
Net current-period other comprehensive income (loss)	(20,920)	(9,697)
Ending Balance	(23,321)	(2,401)	7,296
Pension items
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	1,900	(207)
Net foreign currency translation adjustment	0	0
Actuarial gain (loss) on pension plans	28,125	2,107
Net current-period other comprehensive income (loss)	28,125	2,107
Ending Balance	$ 30,025	$ 1,900	$ (207)