CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $)	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, 2011	$ 299,000	$ (193,713,000)	$ 142,293,000	$ 296,053,000	$ 25,032,000	$ 269,964,000
Balance (in Shares) at Jan. 31, 2011	29,853,000	20,461,000
Net income				28,270,000	5,428,000	33,698,000	33,698,000
Treasury stock acquired		(25,662,000)				(25,662,000)	(25,662,000)
Treasury stock acquired (in Shares)		1,519,000					1,518,877
Acquisition of business					956,000	956,000
Noncontrolling interests distribution and other					(2,084,000)	(2,084,000)
Stock options and related tax effects		4,270,000	701,000			4,971,000
Stock options and related tax effects (in Shares)		(457,000)
Balance at Jan. 31, 2012	299,000	(215,105,000)	142,994,000	324,323,000	29,332,000	281,843,000
Balance (in Shares) at Jan. 31, 2012	29,853,000	21,523,000
Net income				(2,295,000)	707,000	(1,588,000)	(1,588,000)
Treasury stock acquired		(5,445,000)				(5,445,000)	(5,445,000)
Treasury stock acquired (in Shares)		278,000					278,369
Noncontrolling interests distribution and other					(2,108,000)	(2,108,000)
Stock options and related tax effects		1,000,000	581,000			1,581,000
Stock options and related tax effects (in Shares)		(100,000)
Balance at Jan. 31, 2013	299,000	(219,550,000)	143,575,000	322,028,000	27,931,000	274,283,000	274,283,000
Balance (in Shares) at Jan. 31, 2013	29,853,000	21,701,000
Net income				35,073,000	5,156,000	40,229,000	40,229,000
Treasury stock acquired		(3,486,000)				(3,486,000)	(3,486,000)
Treasury stock acquired (in Shares)		137,000					137,015
Noncontrolling interests distribution and other					(1,615,000)	(1,615,000)
Stock options and related tax effects		866,000	476,000			1,342,000
Stock options and related tax effects (in Shares)		(85,000)
Balance at Jan. 31, 2014	$ 299,000	$ (222,170,000)	$ 144,051,000	$ 357,101,000	$ 31,472,000	$ 310,753,000	$ 310,753,000
Balance (in Shares) at Jan. 31, 2014	29,853,000	21,753,000