2. ACCOUNTS RECEIVABLE (Tables)

12 Months Ended

May 31, 2016

Receivables [Abstract]

Accounts receivable

Accounts receivable comprise (in thousands):

	May 31,
	2016			2015
Accounts receivable	$	530		$	1,404
Less: Allowance for doubtful accounts		(8	)		(21	)
	$	522		$	1,383

			Additions
	Balance at		charged to					Balance
	beginning		costs and					at end
	of year		expenses		Deductions*			of year
Allowance for doubtful accounts receivable:
May 31, 2016	$	21	$	—	$	(13	)	$	8
May 31, 2015	$	51	$	—	$	(30	)	$	21

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