17. SELECTED QUARTERLY CONSOLIDATED FINANCIAL DATA (Tables)

12 Months Ended

May 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Selected Quarterly Consolidated Financial Data (unaudited)

    The following tables (presented in thousands, except per share data) sets forth selected unaudited condensed consolidated statements of operations data for each of the four quarters of the fiscal years ended May 31, 2014 and 2013.  

	Three Months Ended
	Aug. 31,			Nov. 30,		Feb. 28,		May 31,
	2013			2013		2014		2014
Net sales	$	3,752		$	4,950	$	5,612	$	5,370
Gross profit	$	1,944		$	2,494	$	2,870	$	2,914
Net (loss) income	$	(166	)	$	137	$	212	$	239
Net (loss) income per share basic and diluted	$	(0.02	)	$	0.01	$	0.02	$	0.02

	Three Months Ended
	Aug. 31,			Nov. 30,			Feb. 28,			May 31,
	2012			2012			2013			2013
Net sales	$	4,832		$	5,054		$	3,340		$	3,262
Gross profit	$	2,456		$	2,263		$	765		$	1,292
Net loss	$	(296	)	$	(811	)	$	(1,458	)	$	(854	)
Net loss per share basic and diluted	$	(0.03	)	$	(0.09	)	$	(0.16	)	$	(0.08	)