Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balance at the beginning of the year (in shares) at Sep. 29, 2018		17,856
Balance at the beginning of the year at Sep. 29, 2018	$ 477,932	$ 4,464	$ 171,407	$ 300,585	$ 1,476
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total comprehensive income	5,334			10,501	(5,167)
Exercise of stock options	38		38
Stock-based compensation (in shares)		23
Stock-based compensation	1,980	$ 6	1,974
Common stock purchased and retired (in shares)		(7)
Common stock purchased and retired	(356)	$ (2)	(354)
Dividends	(5,366)			(5,366)
Balance at the end of the year (in shares) at Dec. 29, 2018		17,872
Balance at the end of the year at Dec. 29, 2018	473,335	$ 4,468	173,065	299,493	(3,691)
Balance at the beginning of the year (in shares) at Sep. 28, 2019		19,124
Balance at the beginning of the year at Sep. 28, 2019	484,059	$ 4,781	182,422	315,329	(18,473)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total comprehensive income	8,903			5,306	3,597
Exercise of stock options (in shares)		1
Exercise of stock options	41		41
Stock-based compensation (in shares)		49
Stock-based compensation	2,328	$ 12	2,316
Common stock purchased and retired (in shares)		(18)
Common stock purchased and retired	(835)	$ (4)	(831)
Dividends	(5,748)			(5,748)
Balance at the end of the year (in shares) at Dec. 28, 2019		19,156
Balance at the end of the year at Dec. 28, 2019	$ 488,748	$ 4,789	$ 183,948	$ 314,887	$ (14,876)