Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Aug. 31, 2012		Aug. 31, 2011
Cash flows from operating activities:
Net (loss) income	$ (296)		$ 124
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Stock-based compensation expense	169		165
(Recovery of) provision for doubtful accounts	(1)		16
Gain on sale of long-term investment	0		(990)
Depreciation and amortization	86		137
Changes in operating assets and liabilities:
Accounts receivable	53		(1,101)
Inventories	(640)		(211)
Prepaid expenses and other	(127)		(83)
Accounts payable	485		376
Accrued expenses and deferred revenue	16		(1)
Income tax payable	1		(38)
Deferred lease commitment, net of current	(18)		(14)
Net cash used in operating activities	(272)		(1,620)
Cash flows from investing activities:
Proceeds from sale of investments	0		1,375
Purchase of property and equipment	(16)		(7)
Net cash (used in) provided by investing activities	(16)		1,368
Cash flows from financing activities:
Line of credit borrowings, net	44		0
Proceeds from issuance of common stock and excercise of stock options	67		0
Net cash provided by financing activities	111		0
Effect of exchange rates on cash and cash equivalents	5		124
Net decrease in cash and cash equivalents	(172)		(128)
Cash and cash equivalents, beginning of period	2,073	[1]	4,020
Cash and cash equivalents, end of period	$ 1,901		$ 3,892

[1] The condensed consolidated balance sheet at May 31, 2012 has been derived from the audited consolidated financial statements at that date.