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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($)
Common Stock [Member]
Treasury Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Noncontrolling Interest [Member]
Total
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        
Net income       35,073,000 5,156,000 40,229,000
Treasury stock acquired   $ (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
Balance (in Shares) at Jan. 31, 2014 29,853,000 21,753,000        
Net income       87,337,000 16,377,000 103,714,000
Treasury stock acquired   $ (18,238,000)       $ (18,238,000)
Treasury stock acquired (in Shares)   284,000       283,979
Noncontrolling interests distribution and other         (4,856,000) $ (4,856,000)
Stock options and related tax effects   $ 851,000 740,000     1,591,000
Stock options and related tax effects (in Shares)   (83,000)        
Balance at Jan. 31, 2015 $ 299,000 $ (239,557,000) 144,791,000 444,438,000 42,993,000 392,964,000
Balance (in Shares) at Jan. 31, 2015 29,853,000 21,954,000        
Net income       31,436,000 5,974,000 37,410,000
Treasury stock acquired   $ (70,208,000)       $ (70,208,000)
Treasury stock acquired (in Shares)   1,254,000       1,254,344
Noncontrolling interests distribution and other         (4,471,000) $ (4,471,000)
Stock options and related tax effects   $ 11,000 53,000     64,000
Stock options and related tax effects (in Shares)   (4,000)        
Balance at Jan. 31, 2016 $ 299,000 $ (309,754,000) $ 144,844,000 $ 475,874,000 $ 44,496,000 $ 355,759,000
Balance (in Shares) at Jan. 31, 2016 29,853,000 23,204,000