Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock, Common [Member]	Total
Balance at Dec. 28, 2024	$ 49,601	$ 697,489	$ 248,740	$ (51,155)	$ (87,784)	$ 856,891
Net income	0	0	(30,804)	0	0	(30,804)
Changes in cumulative translation adjustment	0	0	0	6,399	0	6,399
Adjustments related to postretirement benefits	0	0	0	(5)	0	(5)
Changes in unrealized gains and losses on investments, net of tax	0	0	0	4	0	4
Shares issued for restricted stock units vested	0	(10,461)	0	0	10,461	0
Repurchase and retirement of stock		1,736	0	0		(2,389)
Repurchase and retirement of stock					(4,125)
Common stock repurchases	0	0	0	0	(8,609)	(8,609)
Share-based compensation expense	0	6,230	0	0	0	6,230
Balance at Mar. 29, 2025	49,601	694,994	217,936	(44,757)	(90,057)	827,717
Balance at Dec. 27, 2025	49,875	681,509	174,467	(32,470)	(87,842)	785,539	[1]
Net income	0	0	(12,068)	0	0	(12,068)
Changes in cumulative translation adjustment	0	0	0	(5,091)	0	(5,091)
Adjustments related to postretirement benefits	0	0	0	16	0	16
Changes in unrealized gains and losses on investments, net of tax	0	0	0	(515)	0	(515)
Shares issued for restricted stock units vested	474	(1,478)	0	0	1,004	0
Repurchase and retirement of stock		(4,954)	0	0		(5,164)
Repurchase and retirement of stock					(27)
Share-based compensation expense	0	6,276	0	0	0	6,276
Balance at Mar. 28, 2026	$ 50,166	$ 681,353	$ 162,399	$ (38,060)	$ (86,865)	$ 768,993

[1] Derived from December 27, 2025, audited financial statements