Unaudited Condensed Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Oct. 31, 2015	Jan. 31, 2015
Accounts receivable, allowances	$ 2,229	$ 1,502
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, shares authorized (in shares)	2,000,000	2,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	41,016,710	39,973,689
Common stock, shares outstanding (in shares)	36,357,567	35,314,546
Treasury stock, shares (in shares)	4,659,143	4,659,143