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				6 Months Ended
	Apr. 02, 2022	Jan. 01, 2022	Apr. 03, 2021	Jan. 02, 2021	Apr. 02, 2022	Apr. 03, 2021
Net earnings	$ 39,017	$ 23,129	$ 14,920	$ 8,143	$ 62,146	$ 23,063
Basic weighted average shares outstanding (in shares)	19,492		19,328		19,487	19,319
Dilutive effect of stock-based compensation (in shares)	131		189		128	157
Diluted weighted average shares outstanding (in shares)	19,623		19,517		19,615	19,476
Basic (in dollars per share)	$ 2.00		$ 0.77		$ 3.19	$ 1.19
Diluted (in dollars per share)	$ 1.99		$ 0.76		$ 3.17	$ 1.18