Note 11 - Earnings Per Share - Basic and Diluted Earnings Per Share Attributable to Common Shareholders (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Jun. 27, 2020	Mar. 28, 2020	Dec. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018	Jun. 27, 2020	Jun. 29, 2019
Net earnings	$ 6,664	$ 4,364	$ 555	$ 2,190	$ 1,049	$ 4,126	$ 11,583	$ 7,365
Basic weighted average shares outstanding (in shares)	19,283			19,252			19,272	19,239
Dilutive effect of stock-based compensation (in shares)	94			82			106	97
Diluted weighted average shares outstanding (in shares)	19,377			19,334			19,378	19,336
Basic (in dollars per share)	$ 0.35			$ 0.11			$ 0.60	$ 0.38
Diluted (in dollars per share)	$ 0.34			$ 0.11			$ 0.60	$ 0.38