Consolidated Condensed Statements Of Equity (USD $) In Thousands	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]	Total
Balance at Jan. 31, 2011	$ 299	$ (193,713)	$ 142,293	$ 296,053	$ 25,032	$ 269,964
Balance (in Shares) at Jan. 31, 2011	29,853	20,461
Net income				13,481	2,435	15,916
Treasury stock acquired		(24,410)				(24,410)
Treasury stock acquired (in Shares)		1,451
Noncontrolling interests distribution and other					(1,988)	(1,988)
Stock options and related tax effects		4,066	86			4,152
Stock options and related tax effects (in Shares)		(436)
Balance at Oct. 31, 2011	299	(214,057)	142,379	309,534	25,479	263,634
Balance (in Shares) at Oct. 31, 2011	29,853	21,476
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	21,523
Net income				2,148	1,526	3,674
Treasury stock acquired		(4,905)				(4,905)
Treasury stock acquired (in Shares)		246
Noncontrolling interests distribution and other					(2,085)	(2,085)
Stock options and related tax effects		999	673			1,672
Stock options and related tax effects (in Shares)		(99)
Balance at Oct. 31, 2012	$ 299	$ (219,011)	$ 143,667	$ 326,471	$ 28,773	$ 280,199
Balance (in Shares) at Oct. 31, 2012	29,853	21,670