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Consolidated Statement Of Changes In Stockholders' Equity (USD $)
In Thousands, except Share data
Total
Common Stock
Additional Paid-In Capital
Retained Earnings
Accumulated Comprehensive Income
Treasury Stock
Balance at Apr. 30, 2013 $ 181,299 $ 68 $ 199,120 $ 8,434 $ 73 $ (26,396)
Balance (in shares) at Apr. 30, 2013   67,597,000       3,300,000
Exercise of employee stock options (in shares) 418,466 418,000        
Exercise of employee stock options 1,065   1,065      
Repurchase of treasury stock (in shares)           9,014,000
Repurchase of treasury stock (100,848)         (100,848)
Stock-based compensation 4,774   4,774      
Tax deduction of stock-based compensation in excess of book deductions 1,395   1,395      
Shares issued under employee stock purchase plan (in shares) 84,081 84,000        
Shares issued under employee stock purchase plan 624   624      
Issuance of common stock under restricted stock unit awards, net of shares surrendered (in shares)   146,000        
Issuance of common stock under restricted stock unit awards, net of shares surrendered (791)   (791)      
Net income 43,463     43,463    
Balance at Oct. 31, 2013 $ 130,981 $ 68 $ 206,187 $ 51,897 $ 73 $ (127,244)
Balance (in shares) at Oct. 31, 2013   68,245,000       12,314,000