DEBT AGREEMENTS WITH ESSIG (DETAILS) $ in Thousands	3 Months Ended
	Aug. 31, 2016 USD ($)
Note
Balance at May 31, 2014	$ 0
Borrowings	750
Repayments	(604)
Balance at May 31, 2015	146
Borrowing	0
Repayments	0
Balance at May 31, 2016	146
Borrowing	0
Repayments	0
Balance at August 31, 2016	146
Short Term Note
Balance at May 31, 2014	0
Borrowings	300
Repayments	0
Balance at May 31, 2015	300
Borrowing	578
Repayments	(124)
Balance at May 31, 2016	754
Borrowing	350
Repayments	0
Balance at August 31, 2016	1,104
Total:
Balance at May 31, 2014	0
Borrowings	1,050
Repayments	(604)
Balance at May 31, 2015	446
Borrowing	578
Repayments	(124)
Balance at May 31, 2016	900
Borrowing	350
Repayments	0
Balance at August 31, 2016	$ 1,250