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Condensed Consolidated Statements of Stockholders' Equity - Unaudited - USD ($) $ in Thousands	Total	Additional Paid-in Capital	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balance, beginning of period at Dec. 31, 2019	$ 1,152,488	$ 701,051	$ (8,809)	$ 440,258	$ 19,988
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock awards exercised or vested		(8,010)
Stock-based compensation		1,738
Treasury shares reissued			7,546
Net income	31,100			31,100
Other comprehensive loss	(20,661)				(20,661)
Balance, ending balance at Apr. 03, 2020	1,164,201	694,779	(1,263)	471,358	(673)
Balance, beginning of period at Dec. 31, 2020	1,271,055	700,847	0	517,516	52,692
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock awards exercised or vested		(2,485)
Stock-based compensation		4,704
Treasury shares reissued			0
Net income	21,520			21,520
Other comprehensive loss	(17,070)
Balance, ending balance at Apr. 02, 2021	$ 1,277,724	$ 703,066	$ 0	$ 539,036	$ 35,622

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