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Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 6,937	$ 21,298	$ (21,541)
Foreign currency translation adjustments	(27,232)	33,821	(6,724)
Net change in:
Deferred gains (losses) on cash flow hedges, net of taxes of $(1,866), $2,507, and $(737), respectively	4,484	(6,812)	2,117
Unrecognized retirement obligations, net of taxes of $(111), $158, and $(22,927), respectively	1,097	(7,766)	64,151
Other comprehensive income (loss)	(21,651)	19,243	59,544
Comprehensive income (loss)	$ (14,714)	$ 40,541	$ 38,003

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