Earnings Per Share (Schedule of Earnings per Share, Basic and Diluted) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Earnings Per Share [Abstract]
Net income	$ 5,306	$ 10,501
Weighted average common shares outstanding (in shares)	19,146	19,216
Effect of dilutive securities
Stock-based compensation (in shares)	223	148
Tangible equity units (in shares)	0	192
Weighted average dilutive common shares outstanding (in shares)	19,369	19,556
Earnings per share
Basic (in dollars per share)	$ 0.28	$ 0.55
Diluted (in dollars per share)	$ 0.27	$ 0.54