Condensed Consolidated Statement of Shareholders' Equity Statement - USD ($) $ in Thousands	Total	Common shares	Additional paid-in capital	Common shares subscribed, unissued	Retained earnings	Accumulated other comprehensive income (loss), net of tax	Common shares held in treasury	Common shares subscription receivable
Equity, beginning balance at Dec. 31, 2023	$ 152,474	$ 39,308	$ 197,962	$ 22,832	$ 330,436	$ (4,785)	$ (416,616)	$ (16,663)
Net income	53,469				53,469
Change in 401KSOP and ESOP related shares	(2,413)	(585)	3,160		(4,988)
Shares sold to employees	20,875		11,267				9,608
Options exercised	8,822		280				8,542
Subscription shares	2,825		428	(1,370)			507	3,260
Stock-based compensation	$ (156)		(156)
Dividends, per share	$ 0.075
Dividends	$ (3,166)				(3,166)
Other Comprehensive Income (Loss)	(301)					(301)
Shares purchased	49,000						(49,000)
Equity, ending balance at Sep. 28, 2024	183,429	38,723	212,941	21,462	375,751	(5,086)	(446,959)	(13,403)
Equity, beginning balance at Jun. 29, 2024	161,256	38,757	210,806	22,041	350,779	(5,776)	(439,799)	(15,552)
Net income	26,024				26,024
Change in 401KSOP and ESOP related shares	(1,547)	(34)	(1,513)		0
Shares sold to employees	2,944		1,666				1,278
Options exercised	129		(16)				145
Subscription shares	2,195		285	(579)			340	2,149
Stock-based compensation	$ 1,713		1,713
Dividends, per share	$ 0.025
Dividends	$ (1,052)				(1,052)
Other Comprehensive Income (Loss)	690					690
Shares purchased	8,923						(8,923)
Equity, ending balance at Sep. 28, 2024	183,429	38,723	212,941	21,462	375,751	(5,086)	(446,959)	(13,403)
Equity, beginning balance at Dec. 31, 2024	173,589	38,857	225,846	21,100	375,525	(6,773)	(468,132)	(12,834)
Net income	51,126				51,126
Change in 401KSOP and ESOP related shares	(8,109)	63	2,971		(11,143)
Shares sold to employees	25,490		13,488				12,002
Options exercised	9,055		(263)				9,318
Subscription shares	2,333		534	(1,252)			796	2,255
Stock-based compensation	$ (2,361)		(2,361)
Dividends, per share	$ 0.075
Dividends	$ (3,296)				(3,296)
Other Comprehensive Income (Loss)	808					808
Shares purchased	60,479						(60,479)
Equity, ending balance at Sep. 27, 2025	188,156	38,920	240,215	19,848	412,212	(5,965)	(506,495)	(10,579)
Equity, beginning balance at Jun. 28, 2025	172,765	38,934	237,176	20,514	391,829	(5,505)	(498,313)	(11,870)
Net income	21,614				21,614
Change in 401KSOP and ESOP related shares	(702)	(14)	(688)		0
Shares sold to employees	3,318		1,889				1,429
Options exercised	149		(173)				322
Subscription shares	1,499		345	(666)			529	1,291
Stock-based compensation	$ 1,666		1,666
Dividends, per share	$ 0.025
Dividends	$ (1,231)				(1,231)
Other Comprehensive Income (Loss)	(460)					(460)
Shares purchased	10,462						(10,462)
Equity, ending balance at Sep. 27, 2025	$ 188,156	$ 38,920	$ 240,215	$ 19,848	$ 412,212	$ (5,965)	$ (506,495)	$ (10,579)