Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Capital in Excess of Par Value	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Treasury Stock	Accumulated Other Comprehensive Items	Noncontrolling Interest
Beginning balance (in shares) at Dec. 29, 2018			14,624,159				3,514,163
Beginning balance at Dec. 29, 2018	$ 374,571		$ 146	$ 104,731	$ 393,578		$ (86,111)	$ (39,376)	$ 1,603
Beginning balance (Accounting Standards Update 2016-02) at Dec. 29, 2018		$ (17)				$ (17)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	52,564				52,068				496
Dividends declared - common stock	(10,380)				(10,380)
Dividend paid to noncontrolling interest	(664)								(664)
Activity under stock plans (in shares)							(299,275)
Activity under stock plans	9,300			1,967			$ 7,333
Other comprehensive items	1,705							1,756	(51)
Ending balance (in shares) at Dec. 28, 2019			14,624,159				3,214,888
Ending balance at Dec. 28, 2019	427,079		$ 146	106,698	435,249		$ (78,778)	(37,620)	1,384
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	55,739				55,196				543
Dividends declared - common stock	(11,045)				(11,045)
Dividend paid to noncontrolling interest	(525)								(525)
Activity under stock plans (in shares)							(132,969)
Activity under stock plans	7,385			4,126			$ 3,259
Other comprehensive items	18,272							18,128	144
Ending balance (in shares) at Jan. 02, 2021			14,624,159				3,081,919
Ending balance at Jan. 02, 2021	496,905		$ 146	110,824	479,400		$ (75,519)	(19,492)	1,546
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	84,881				84,043				838
Dividends declared - common stock	(11,595)				(11,595)
Dividend paid to noncontrolling interest	(560)								(560)
Activity under stock plans (in shares)							(78,500)
Activity under stock plans	6,987			5,064			$ 1,923
Other comprehensive items	(10,980)							(10,858)	(122)
Noncontrolling interest acquired (Note 2)	367								367
Purchase of shares of noncontrolling interest (Note 2)	(389)								(389)
Ending balance (in shares) at Jan. 01, 2022			14,624,159				3,003,419
Ending balance at Jan. 01, 2022	$ 565,616		$ 146	$ 115,888	$ 551,848		$ (73,596)	$ (30,350)	$ 1,680