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11. LONG-TERM DEBT AND LINE OF CREDIT (Tables)
9 Months Ended
Feb. 29, 2016
Long-term Debt And Line Of Credit Tables  
Long-term debt, net of debt issuance costs

    Long-term debt, net of debt issuance costs (in thousands):

 

    February 29,     May 31,  
    2016     2015  
Principal   $ 4,110     $ 4,110  
Unamortized debt issuance costs     (193 )     (319 )
    $ 3,917     $ 3,791