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Consolidated Statements of Shareholders' Equity - USD ($)
$ in Thousands
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Treasury Stock [Member]
Beginning Balance at May. 31, 2014 $ 33,787 $ 312 $ 4,928 $ 94,291 $ (65,744)
Net income (loss) (10,414)     (10,414)  
Ending Balance at May. 31, 2015 23,373 312 4,928 83,877 (65,744)
Net income (loss) 1,678     1,678  
Share-based compensation 82   82    
Ending Balance at May. 31, 2016 $ 25,133 $ 312 $ 5,010 $ 85,555 $ (65,744)