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10. CUSTOMER DEPOSITS AND DEFERRED REVENUE, SHORT-TERM (Tables)
9 Months Ended
Feb. 28, 2017
Customer Deposits And Deferred Revenue Short-term Tables  
Customer deposits and deferred revenue

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

 

   February 28,  May 31,
   2017  2016
Customer deposits  $689   $540 
Deferred revenue   323    1,174 
   $1,012   $1,714