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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		6 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Mar. 31, 2018	Apr. 01, 2017
Net earnings	$ 5,879	$ 7,420	$ 13,990	$ 11,880
Basic weighted average shares outstanding (in shares)	19,052	19,004	19,047	18,992
Dilutive effect of stock-based compensation (in shares)	206	220	194	225
Diluted weighted average shares outstanding (in shares)	19,258	19,224	19,241	19,217
Net earnings per share:
Basic (in dollars per share)	$ 0.31	$ 0.39	$ 0.73	$ 0.63
Diluted (in dollars per share)	$ 0.31	$ 0.39	$ 0.73	$ 0.62

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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