Consolidated Condensed Statements Of Equity (USD $) In Thousands, except Share data	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]	Total
Balance at Jan. 31, 2012	$ 299	$ (215,105)	$ 142,994	$ 324,323	$ 29,332	$ 281,843
Balance (in Shares) at Jan. 31, 2012	29,853,000	21,523,000
Net income				1,739	1,042	2,781
Treasury stock acquired		(3,541)				(3,541)
Treasury stock acquired (in Shares)		170,000				32,935
Noncontrolling interests distribution and other					(1,983)	(1,983)
Stock options and related tax effects		999	673			1,672
Stock options and related tax effects (in Shares)		(99,000)
Balance at Jul. 31, 2012	299	(217,647)	143,667	326,062	28,391	280,772
Balance (in Shares) at Jul. 31, 2012	29,853,000	21,594,000
Balance at Jan. 31, 2013	299	(219,550)	143,575	322,028	27,931	274,283
Balance (in Shares) at Jan. 31, 2013	29,853,000	21,701,000
Net income				9,332	1,486	10,818
Treasury stock acquired		(856)				(856)
Treasury stock acquired (in Shares)		46,000
Stock options and related tax effects		636	213			849
Stock options and related tax effects (in Shares)		(62,000)
Balance at Jul. 31, 2013	$ 299	$ (219,770)	$ 143,788	$ 331,360	$ 29,417	$ 285,094
Balance (in Shares) at Jul. 31, 2013	29,853,000	21,685,000