Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets Parenthetical (Unaudited)

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Consolidated Balance Sheets Parenthetical (Unaudited) - USD ($)
$ in Thousands
Aug. 31, 2015
May. 31, 2015
Statement of Financial Position [Abstract]    
Allowance for doubtful accounts $ 2,909 $ 2,038
Accumulated depreciation $ 21,084 $ 19,337
Common stock, shares issued 45,554,180 45,552,180
Common stock, shares outstanding 45,554,180 45,552,180