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Note 10 - 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
	Dec. 28, 2019	Dec. 29, 2018
Net earnings	$ 555	$ 4,126
Basic weighted average shares outstanding (in shares)	19,261	19,223
Dilutive effect of stock-based compensation (in shares)	109	113
Diluted weighted average shares outstanding (in shares)	19,370	19,336
Net earnings per share:
Basic (in dollars per share)	$ 0.03	$ 0.21
Diluted (in dollars per share)	$ 0.03	$ 0.21

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