2. ACCOUNTS RECEIVABLE

12 Months Ended

May 31, 2017

Accounts Receivable, Net, Current [Abstract]

ACCOUNTS RECEIVABLE

2. ACCOUNTS RECEIVABLE: 

Accounts receivable comprise (in thousands):

	May 31,
	2017			2016
Accounts receivable	$	4,071		$	530
Less: Allowance for doubtful accounts		(61	)		(8	)
	$	4,010		$	522

			Additions
	Balance at		charged to					Balance
	beginning		costs and					at end
	of year		expenses		Deductions*			of year
Allowance for doubtful accounts receivable:
May 31, 2017	$	8	$	53	$	—		$	61
May 31, 2016	$	21	$	—	$	(13	)	$	8

    * Deductions include write-offs of uncollectible accounts and collections of amounts previously reserved.