Shareholders' Equity - Activity in Shareholders' Equity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 29, 2024	Jun. 30, 2024	Mar. 31, 2024	Oct. 01, 2023	Jul. 02, 2023	Apr. 02, 2023	Sep. 29, 2024	Oct. 01, 2023
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Balance at beginning of period	$ 451,165	$ 428,548	$ 425,947	$ 384,908	$ 367,029	$ 361,537	$ 425,947	$ 361,537
Net income (loss)	28,443	22,558	14,179	9,879	15,797	(714)	65,180	24,962
Issuances of stock related to restricted share units and performance shares	0	0	0		0	0
Restricted stock issuances		947			707
Unrecognized compensation expense related to restricted stock awards		(946)			(708)
Cash dividends declared	(582)	(584)	(589)	(581)	(581)	(580)
Compensation expense related to share-based plans, net of forfeitures and shares received for tax withholdings	2,616	2,130	(355)	2,182	1,803	1,836
Foreign currency translation adjustment	21,131	(2,022)	(11,092)	(9,176)	1,361	4,930	8,017	(2,885)
Pension liability adjustment	(1,210)	534	458	202	(800)	(279)	(218)	(877)
Reclassification out of accumulated other comprehensive loss – discontinued cash flow hedge	0			150	300	299	0	749
Balance at end of period	$ 501,563	$ 451,165	$ 428,548	$ 387,564	$ 384,908	$ 367,029	$ 501,563	$ 387,564
Cash dividends declared, per common share (in dollars per share)	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01
COMMON STOCK
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Balance at beginning of period (in shares)	58,303	58,273	58,112	58,112	58,053	58,106	58,112	58,106
Balance at beginning of period	$ 5,830	$ 5,827	$ 5,811	$ 5,811	$ 5,805	$ 5,811	$ 5,811	$ 5,811
Issuances of stock related to restricted share units and performance shares (in shares)	3	4	472		5	79
Issuances of stock related to restricted share units and performance shares	$ 0	$ 0	$ 47		$ 1	$ 8
Restricted stock issuances (in shares)		58			102
Restricted stock issuances		$ 6			$ 10
Compensation expense related to share-based plans, net of forfeitures and shares received for tax withholdings (in shares)	(2)	(32)	(311)	(5)	(48)	(132)
Compensation expense related to share-based plans, net of forfeitures and shares received for tax withholdings	$ 0	$ (3)	$ (31)	$ 0	$ (5)	$ (14)
Balance at end of period (in shares)	58,304	58,303	58,273	58,107	58,112	58,053	58,304	58,107
Balance at end of period	$ 5,830	$ 5,830	$ 5,827	$ 5,811	$ 5,811	$ 5,805	$ 5,830	$ 5,811
ADDITIONAL PAID-IN CAPITAL
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Balance at beginning of period	254,666	252,538	252,909	247,797	246,001	244,159	252,909	244,159
Issuances of stock related to restricted share units and performance shares	0	0	(47)		(1)	(8)
Restricted stock issuances		941			697
Unrecognized compensation expense related to restricted stock awards		(946)			(708)
Compensation expense related to share-based plans, net of forfeitures and shares received for tax withholdings	2,616	2,133	(324)	2,182	1,808	1,850
Balance at end of period	257,282	254,666	252,538	249,979	247,797	246,001	257,282	249,979
RETAINED EARNINGS
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Balance at beginning of period	356,397	334,423	320,833	292,561	277,345	278,639	320,833	278,639
Net income (loss)	28,443	22,558	14,179	9,879	15,797	(714)
Cash dividends declared	(582)	(584)	(589)	(581)	(581)	(580)
Balance at end of period	384,258	356,397	334,423	301,859	292,561	277,345	384,258	301,859
FOREIGN CURRENCY TRANSLATION ADJUSTMENT
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Balance at beginning of period	(132,704)	(130,682)	(119,590)	(132,484)	(133,845)	(138,775)	(119,590)	(138,775)
Foreign currency translation adjustment	21,131	(2,022)	(11,092)	(9,176)	1,361	4,930
Balance at end of period	(111,573)	(132,704)	(130,682)	(141,660)	(132,484)	(133,845)	(111,573)	(141,660)
PENSION LIABILITY
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Balance at beginning of period	(33,024)	(33,558)	(34,016)	(28,627)	(27,827)	(27,548)	(34,016)	(27,548)
Pension liability adjustment	(1,210)	534	458	202	(800)	(279)
Balance at end of period	$ (34,234)	$ (33,024)	$ (33,558)	(28,425)	(28,627)	(27,827)	$ (34,234)	(28,425)
CASH FLOW HEDGE
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Balance at beginning of period				(150)	(450)	(749)		(749)
Reclassification out of accumulated other comprehensive loss – discontinued cash flow hedge				150	300	299
Balance at end of period				$ 0	$ (150)	$ (450)		$ 0