Consolidated Statements of Shareholders' Equity (Unaudited) - 6 months ended Apr. 01, 2017 - 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			11,880		$ 11,880
Stock options exercised, net (in shares)	26				67
Stock options exercised, net	$ 26	81			$ 107
Vesting of restricted stock units (in shares)	23
Vesting of restricted stock units	$ 23	(23)
Compensation expense associated with stock-based plans		1,133			1,133
Excess tax benefits from stock-based compensation		488			488
Restricted stock units and stock options surrendered for withholding taxes payable		(646)			(646)
Cash dividends declared			(24,869)		(24,869)
Balance (in shares) at Apr. 01, 2017	19,025
Balance at Apr. 01, 2017	$ 19,025	$ 68,850	$ 126,325	$ (1,541)	$ 212,659