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Earnings Per Share - Computation of Basic and Diluted Earnings (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Earnings Per Share [Abstract]
Net income	$ 10,514	$ 9,541	$ 19,129	$ 16,381
Weighted average shares of common stock outstanding:
Basic	42,245	42,004	42,165	41,953
Dilutive effect of common stock equivalents	313	358	300	333
Diluted	42,558	42,362	42,465	42,286
Basic earnings per share	$ 0.25	$ 0.23	$ 0.45	$ 0.39
Diluted earnings per share	$ 0.25	$ 0.23	$ 0.45	$ 0.39

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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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