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Consolidated Statements of Shareholders' Equity - 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, 2015		18,466
Balance at Oct. 03, 2015		$ 18,466	$ 60,967	$ 122,928	$ (2,146)	$ 200,215
Net earnings				37,245		37,245
Other comprehensive income(1)	[1]				605	605
Stock options exercised (in shares)		463
Stock options exercised		$ 463	4,602			5,065
Vesting of restricted stock units (in shares)		47
Vesting of restricted stock units		$ 47	(47)
Compensation expense associated with stock-based plans			2,439			2,439
Excess tax benefits from stock-based compensation			1,717			1,717
Restricted stock units and stock options surrendered for withholding taxes payable			(1,861)			(1,861)
Cash dividends declared				(20,859)		(20,859)
Balance (in shares) at Oct. 01, 2016		18,976
Balance at Oct. 01, 2016		$ 18,976	67,817	139,314	(1,541)	224,566
Net earnings				22,548		22,548
Other comprehensive income(1)	[1]				208	208
Stock options exercised (in shares)		26
Stock options exercised		$ 26	81			107
Vesting of restricted stock units (in shares)		39
Vesting of restricted stock units		$ 39	(39)
Compensation expense associated with stock-based plans			2,245			2,245
Excess tax benefits from stock-based compensation			537			537
Restricted stock units and stock options surrendered for withholding taxes payable			(824)			(824)
Cash dividends declared				(26,011)		(26,011)
Balance (in shares) at Sep. 30, 2017		19,041
Balance at Sep. 30, 2017		$ 19,041	69,817	135,851	(1,333)	223,376
Net earnings				36,266		36,266
Other comprehensive income(1)	[1]				139	139
Stock options exercised (in shares)		143
Stock options exercised		$ 143	1,938			2,081
Vesting of restricted stock units (in shares)		39
Vesting of restricted stock units		$ 39	(39)
Compensation expense associated with stock-based plans			2,078			2,078
Restricted stock units and stock options surrendered for withholding taxes payable			(942)			(942)
Cash dividends declared				(21,333)		(21,333)
Adoption of ASU 2018-02 (Note 3)				300	(300)
Balance (in shares) at Sep. 29, 2018		19,223
Balance at Sep. 29, 2018		$ 19,223	$ 72,852	$ 151,084	$ (1,494)	$ 241,665
[1] Activity within accumulated other comprehensive income (loss) is reported net of related income taxes: 2016 $363, 2017 ($127) and 2018 ($44).

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Amount of increase (decrease) in accumulated other comprehensive income (AOCI) for reclassification to retained earnings of stranded tax effects from remeasurement of deferred tax pursuant to Tax Cuts and Jobs Act.

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