Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net Income	$ 13,060	$ 13,120
Other comprehensive income (loss)
Defined benefit plans	150	150
Foreign currency translation	(3,420)	(8,260)
Derivative instruments	3,900	4,430
Total other comprehensive income (loss)	630	(3,680)
Total comprehensive income	$ 13,690	$ 9,440