CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Thousands	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member]	Total
Balance at Jan. 31, 2013	$ 299	$ (219,550)	$ 143,575	$ 322,028	$ 27,931	$ 274,283
Balance (in Shares) at Jan. 31, 2013	29,853	21,701
Net income				3,507	566	4,073	4,073
Treasury stock acquired		(564)				(564)
Treasury stock acquired (in Shares)		31
Stock options and related tax effects		438	130			568
Stock options and related tax effects (in Shares)		(43)
Balance at Apr. 30, 2013	299	(219,676)	143,705	325,535	28,497	278,360
Balance (in Shares) at Apr. 30, 2013	29,853	21,689
Balance at Jan. 31, 2014	299	(222,170)	144,051	357,101	31,472	310,753	310,753
Balance (in Shares) at Jan. 31, 2014	29,853	21,753
Net income				21,742	2,458	24,200	24,200
Stock options and related tax effects		767	592			1,359
Stock options and related tax effects (in Shares)		(75)
Balance at Apr. 30, 2014	$ 299	$ (221,403)	$ 144,643	$ 378,843	$ 33,930	$ 336,312	$ 336,312
Balance (in Shares) at Apr. 30, 2014	29,853	21,678