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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. 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]				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]				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)
Reclassification of stranded tax effects				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
Net earnings				5,598		5,598
Other comprehensive income	[1]				(754)	(754)
Stock options exercised
Vesting of restricted stock units (in shares)		38
Vesting of restricted stock units		$ 38	(38)
Compensation expense associated with stock-based plans			2,057			2,057
Restricted stock units and stock options surrendered for withholding taxes payable			(239)			(239)
Cash dividends declared				(2,310)		(2,310)
Balance (in shares) at Sep. 28, 2019		19,261
Balance at Sep. 28, 2019		$ 19,261	$ 74,632	$ 154,372	$ (2,248)	$ 246,017
[1] Activity within accumulated other comprehensive income (loss) is reported net of related income taxes: 2017 ($127), 2018 ($44) and 2019 $239.

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