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Consolidated Statement of Stockholders' Equity (Unaudited) (USD $)
In Thousands, except Share data
Total
Common Stock
Additional paid in capital
Retained earnings
Accumulated other comprehensive loss
Treasury Stock
Beginning Balance at May. 31, 2012 $ 523,520 $ 348 $ 496,375 $ 30,175 $ (1,274) $ (2,104)
Beginning Balance, Shares at May. 31, 2012   34,826,531       (142,305)
Net income 1,248     1,248    
Exercise of stock options (103)   (103)      
Exercise of stock options, Shares   300        
Tax impact of stock option activity (504)   (504)      
Purchase of common stock under ESPP 579   579      
Purchase of common stock under ESPP, Shares   59,594        
Issuance of performance shares 1 1        
Issuance of performance shares, Shares   87,695        
Stock based compensation 2,375   2,375      
Other comprehensive loss, net of tax (428)       (428)  
Ending Balance at Nov. 30, 2012 $ 526,688 $ 349 $ 498,722 $ 31,423 $ (1,702) $ (2,104)
Ending Balance, Shares at Nov. 30, 2012   34,974,120       (142,305)