Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Oct. 02, 2021	19,408,000
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 (in shares)	6,000
Stock options exercised, net	$ 6	40			46
Compensation expense associated with stock-based plans		272			272
Cash dividends declared			(39,410)		(39,410)
Restricted stock units and stock options surrendered for withholding taxes payable		(55)			(55)
Balance (in shares) at Jan. 01, 2022	19,414,000
Balance at Jan. 01, 2022	$ 19,414	78,945	190,103	(2,442)	286,020
Balance (in shares) at Oct. 02, 2021	19,408,000
Balance at Oct. 02, 2021	$ 19,408	78,688	206,384	(2,442)	302,038
Net earnings					$ 62,146
Repurchases of common stock (in shares)					0
Balance (in shares) at Apr. 02, 2022	19,439,000
Balance at Apr. 02, 2022	$ 19,439	79,613	228,537	(2,442)	$ 325,147
Balance (in shares) at Jan. 01, 2022	19,414,000
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
Repurchases of common stock (in shares)					0
Cash dividends declared			(583)		$ (583)
Vesting of restricted stock units (in shares)	25,000
Vesting of restricted stock units	$ 25	(25)			0
Restricted stock units and stock options surrendered for withholding taxes payable		(137)			(137)
Balance (in shares) at Apr. 02, 2022	19,439,000
Balance at Apr. 02, 2022	$ 19,439	79,613	228,537	(2,442)	325,147
Balance (in shares) at Oct. 01, 2022	19,478,000
Balance at Oct. 01, 2022	$ 19,478	81,997	289,246	(977)	389,744
Net earnings			11,123		11,123
Stock options exercised, net (in shares)	5,000
Stock options exercised, net	$ 5	89			94
Compensation expense associated with stock-based plans		130			130
Repurchases of common stock (in shares)	(32,000)
Repurchases of common stock	$ (32)	(134)	(750)		(916)
Cash dividends declared			(39,501)		(39,501)
Balance (in shares) at Dec. 31, 2022	19,451,000
Balance at Dec. 31, 2022	$ 19,451	82,082	260,118	(977)	360,674
Balance (in shares) at Oct. 01, 2022	19,478,000
Balance at Oct. 01, 2022	$ 19,478	81,997	289,246	(977)	389,744
Net earnings					$ 16,224
Stock options exercised, net (in shares)					5,000
Repurchases of common stock (in shares)					(66,113)
Repurchases of common stock					$ (1,900)
Balance (in shares) at Apr. 01, 2023	19,441,000
Balance at Apr. 01, 2023	$ 19,441	82,708	263,806	(977)	364,978
Balance (in shares) at Dec. 31, 2022	19,451,000
Balance at Dec. 31, 2022	$ 19,451	82,082	260,118	(977)	360,674
Net earnings			5,101		5,101
Compensation expense associated with stock-based plans		983			$ 983
Repurchases of common stock (in shares)	(34,000)				(34,459)
Repurchases of common stock	$ (34)	(146)	(829)		$ (1,009)
Cash dividends declared			(584)		(584)
Vesting of restricted stock units (in shares)	24,000
Vesting of restricted stock units	$ 24	(24)			0
Restricted stock units and stock options surrendered for withholding taxes payable		(187)			(187)
Balance (in shares) at Apr. 01, 2023	19,441,000
Balance at Apr. 01, 2023	$ 19,441	$ 82,708	$ 263,806	$ (977)	$ 364,978