8. PRODUCT WARRANTIES (Tables)

6 Months Ended

Nov. 30, 2015

Product Warranties Disclosures [Abstract]

Liability for product warranties

    The following is a summary of changes in the Company's liability for product warranties during the three and six months ended November 30, 2015 and 2014 (in thousands):

	Three Months Ended						Six Months Ended
	November 30,						November 30,
	2015			2014			2015			2014
Balance at the beginning of the period	$	219		$	168		$	137		$	223
Accruals for warranties issued during the period		128			66			237			98
Settlement made during the period (in cash or in kind)		(42	)		(85	)		(69	)		(172	)
Balance at the end of the period	$	305		$	149		$	305		$	149