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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, 2010 $ 299,000 $ (186,407,000) $ 141,698,000 $ 290,984,000 $ 49,000 $ 28,473,000 $ 275,096,000
Balance (in Shares) at Jan. 31, 2010 29,853,000 20,045,000          
Net income       5,069,000   3,673,000 8,742,000
Treasury stock acquired   (8,229,000)         (8,229,000)
Treasury stock acquired (in Shares)   515,000         514,657
Reclassification adjustment for net gains included in net income, net of tax         (49,000)   (49,000)
Deconsolidation of subsidiary           (7,114,000) (7,114,000)
Stock options and related tax effects   923,000 595,000       1,518,000
Stock options and related tax effects (in Shares)   (99,000)          
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
Treasury stock acquired   (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)
Treasury stock acquired   (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
Balance (in Shares) at Jan. 31, 2013 29,853,000 21,701,000