17. SELECTED QUARTERLY CONSOLIDATED FINANCIAL DATA (Tables)

12 Months Ended

May 31, 2013

Quarterly Financial Information Disclosure [Abstract]

Selected Quarterly Consolidated Financial Data (unaudited)

In Thousands, except per share data

	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)

	Three Months Ended
	Aug. 31,	Nov. 30,	Feb. 29,		May 31,
	2011	2011	2012		2012
Net sales....................................	$4,130	$ 3,860	$ 2,855	$4,676
Gross profit.................................	$1,802	$ 1,128	$ 1,108		$2,169
Net income (loss)............................	$  124	$(1,373)	$(1,361)		$(779)
Net income (loss) per share basic and diluted.	$ 0.01	$ (0.15)	$ (0.15)		$(0.09)