Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Oct. 03, 2020	19,304
Balance at Oct. 03, 2020	$ 19,304	$ 76,387	$ 171,068	$ (1,956)	$ 264,803
Net earnings			8,143		8,143
Stock options exercised, net, shares (in shares)	10
Stock options exercised, net	$ 10	118			128
Compensation expense associated with stock-based plans		224			224
Restricted stock units and stock options surrendered for withholding taxes payable		(13)			(13)
Cash dividends declared			(29,551)		(29,551)
Balance (in shares) at Jan. 02, 2021	19,314
Balance at Jan. 02, 2021		76,716		(1,956)	243,734
Balance (in shares) at Oct. 03, 2020	19,304
Balance at Oct. 03, 2020	$ 19,304	76,387	171,068	(1,956)	264,803
Net earnings					41,458
Balance (in shares) at Jul. 03, 2021	19,358
Balance at Jul. 03, 2021	$ 19,358	77,780	181,814	(1,956)	276,996
Balance (in shares) at Jan. 02, 2021	19,314
Balance at Jan. 02, 2021		76,716		(1,956)	243,734
Net earnings			14,920		14,920
Stock options exercised, net, shares (in shares)	2
Stock options exercised, net	$ 2	47			49
Compensation expense associated with stock-based plans		710			710
Restricted stock units and stock options surrendered for withholding taxes payable		(97)			(97)
Cash dividends declared			(580)		(580)
Vesting of restricted stock units, shares (in shares)	25
Vesting of restricted stock units	$ 25	(25)			0
Balance (in shares) at Apr. 03, 2021	19,341
Balance at Apr. 03, 2021	$ 19,341	77,351	164,000	(1,956)	258,736
Net earnings			18,395		18,395
Stock options exercised, net, shares (in shares)	17
Stock options exercised, net	$ 17	240			257
Compensation expense associated with stock-based plans		240			240
Restricted stock units and stock options surrendered for withholding taxes payable		(51)			(51)
Cash dividends declared			(581)		(581)
Balance (in shares) at Jul. 03, 2021	19,358
Balance at Jul. 03, 2021	$ 19,358	77,780	181,814	(1,956)	276,996
Balance (in shares) at Oct. 02, 2021	19,408
Balance at Oct. 02, 2021	$ 19,408	78,688	206,384	(2,442)	302,038
Net earnings			23,129		23,129
Stock options exercised, net, shares (in shares)	6
Stock options exercised, net	$ 6	40			46
Compensation expense associated with stock-based plans		272			272
Restricted stock units and stock options surrendered for withholding taxes payable		(55)			(55)
Cash dividends declared			(39,410)		(39,410)
Balance (in shares) at Jan. 01, 2022	19,414
Balance at Jan. 01, 2022	$ 19,414	78,945	190,103	(2,442)	286,020
Balance (in shares) at Oct. 02, 2021	19,408
Balance at Oct. 02, 2021	$ 19,408	78,688	206,384	(2,442)	302,038
Net earnings					$ 100,705
Stock options exercised, net, shares (in shares)					85
Balance (in shares) at Jul. 02, 2022	19,506
Balance at Jul. 02, 2022	$ 19,506	81,349	266,511	(2,442)	$ 364,924
Balance (in shares) at Jan. 01, 2022	19,414
Balance at Jan. 01, 2022	$ 19,414	78,945	190,103	(2,442)	286,020
Net earnings			39,017		39,017
Compensation expense associated with stock-based plans		830			830
Restricted stock units and stock options surrendered for withholding taxes payable		(137)			(137)
Cash dividends declared			(583)		(583)
Vesting of restricted stock units, shares (in shares)	25
Vesting of restricted stock units	$ 25	(25)			0
Balance (in shares) at Apr. 02, 2022	19,439
Balance at Apr. 02, 2022	$ 19,439	79,613	228,537	(2,442)	325,147
Net earnings			38,559		38,559
Stock options exercised, net, shares (in shares)	67
Stock options exercised, net	$ 67	1,537			1,604
Compensation expense associated with stock-based plans		293			293
Restricted stock units and stock options surrendered for withholding taxes payable		(94)			(94)
Cash dividends declared			(585)		(585)
Balance (in shares) at Jul. 02, 2022	19,506
Balance at Jul. 02, 2022	$ 19,506	$ 81,349	$ 266,511	$ (2,442)	$ 364,924