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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       4,652 904 5,556
Treasury stock acquired   (3,563)       (3,563)
Treasury stock acquired (in Shares)   224        
Stock options and related tax effects   3,882 33     3,915
Stock options and related tax effects (in Shares)   (417)        
Balance at Apr. 30, 2011 299 (193,394) 142,326 300,705 25,936 275,872
Balance (in Shares) at Apr. 30, 2011 29,853 20,268        
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       933 559 1,492
Treasury stock acquired   (1,071)       (1,071)
Treasury stock acquired (in Shares)   33        
Noncontrolling interests distribution and other         (526) (526)
Stock options and related tax effects   937 598     1,535
Stock options and related tax effects (in Shares)   (94)        
Balance at Apr. 30, 2012 $ 299 $ (215,239) $ 143,592 $ 325,256 $ 29,365 $ 283,273
Balance (in Shares) at Apr. 30, 2012 29,853 21,462