Condensed Consolidated Statement of Shareholders' Equity (Unaudited) - 9 months ended Oct. 31, 2015 - USD ($) $ in Thousands	Total	Common Stock [Member]	Accumulated Deficit [Member]
Beginning Balance at Jan. 31, 2015	$ 151,062	$ 159,015	$ (7,953)
Beginning Balance, shares at Jan. 31, 2015		17,127,875
Exercise of employee stock options and employee stock purchases	278	$ 278
Exercise of employee stock options and employee stock purchases, shares		484,347
Tax benefit from exercise of stock options	1,103	$ 1,103
Net share settlement of stock options and restricted stock units	(2,024)	$ (2,024)
Net share settlement of stock options and restricted stock units, shares		(297,584)
Issuance of restricted stock	0	$ 0	0
Issuance of restricted stock, shares		105,864
Stock-based compensation expense	2,881	$ 2,881
Repurchase and retirement of common stock	(5,881)		(5,881)
Repurchase and retirement of common stock, shares		(254,011)
Dividends paid	(25,951)		(25,951)
Net loss	(29)		(29)
Ending Balance at Oct. 31, 2015	$ 121,439	$ 161,253	$ (39,814)
Ending Balance, shares at Oct. 31, 2015		17,166,491