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Consolidated Statement of Equity - 3 months ended Aug. 31, 2016 - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in Capital
Accumulated Other Comprehensive Income (Loss)
Retained Earnings
Non-controlling Interest
Beginning Balance at May. 31, 2016 $ 404,161 $ 6,011 $ 150,000 $ (3,946) $ 252,133 $ (37)
Beginning Balance (in shares) at May. 31, 2016 37,567,689 37,567,689        
Exercise of options, share based compensation and income tax benefit (in shares)   132,956        
Exercise of options, share based compensation and income tax benefit $ 5,275 $ 21 5,254      
Issuance of shares under employee stock purchase plan (in shares)   8,788        
Issuance of shares under employee stock purchase plan 428 $ 1 427      
Net income (loss 9,934       9,881 53
Other comprehensive loss (2,578)     (2,578)    
Ending Balance at Aug. 31, 2016 $ 417,220 $ 6,033 $ 155,681 $ (6,524) $ 262,014 $ 16
Ending Balance (in shares) at Aug. 31, 2016 37,709,433 37,709,433