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10. CUSTOMER DEPOSITS AND DEFERRED REVENUE, SHORT-TERM (Tables)
6 Months Ended
Nov. 30, 2015
Customer Deposits And Deferred Revenue Short-term Tables  
Customer deposits and deferred revenue

    Customer deposits and deferred revenue, short-term (in thousands):

 

   

  November 30,

2015

 

  May 31,

2015

 
Customer deposits   $ 909   $ 3,685  
Deferred revenue     386     1,065  
    $ 1,295   $ 4,750