CONDENSED CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY - 9 months ended Oct. 31, 2015 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]
Balance at Jan. 31, 2015	$ 331,198	$ 207	$ 67,389	$ 270,686	$ (7,084)
Balance, shares at Jan. 31, 2015		20,673			(381)
Stock option exercises	155		(125)		$ 280
Stock option exercises, shares					15
Dividends declared ($0.19 per share)	(3,866)			(3,866)
Stock-based compensation income tax benefit	121		121
Employee stock purchase plan purchases	179		26		$ 153
Employee stock purchase plan purchases, shares					8
Restricted stock awards	0	$ (1)	(3,980)		$ 3,981
Restricted stock awards, shares		(69)			212
Shares surrendered by employees to pay taxes on restricted stock	(46)				$ (46)
Shares surrendered by employees to pay taxes on restricted stock, shares					(2)
Purchase of common stock for treasury	(10,181)				$ (10,181)
Purchase of common stock for treasury, shares					(429)
Stock-based compensation expense	2,376		2,376
Net income	24,599			24,599
Balance at Oct. 31, 2015	$ 344,535	$ 206	$ 65,807	$ 291,419	$ (12,897)
Balance, shares at Oct. 31, 2015		20,604			(577)