Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	3 Months Ended
	Aug. 31, 2011		Aug. 31, 2010
Cash flows from operating activities:
Net income (loss)	$ 124		$ (1,516)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Stock compensation expense	165		274
Provision for doubtful accounts	16		11
Loss on disposal of assets	0		2
Gain on sale of long-term investment	(990)		0
Depreciation and amortization	137		147
Changes in operating assets and liabilities:
Accounts receivable	(1,101)		(653)
Inventories	(211)		(307)
Deferred lease commitment	(14)		(9)
Accounts payable	376		(292)
Income tax payable	(38)		(20)
Accrued expenses and deferred revenue	(1)		(464)
Prepaid expenses and other	(83)		260
Net cash used in operating activities	(1,620)		(2,567)
Cash flows from investing activities:
Proceeds from sale of investments	1,375		0
Purchases of property and equipment	(7)		0
Net cash provided by investing activities	1,368		0
Cash flows from financing activities:
Proceeds from issuance of common stock and excercise of stock options	0		12
Net cash provided by financing activities	0		12
Effect of exchange rates on cash	124		194
Net decrease in cash and cash equivalents	(128)		(2,361)
Cash and cash equivalents, beginning of period	4,020	[1]	7,766
Cash and cash equivalents, end of period	$ 3,892		$ 5,405

[1] The condensed consolidated balance sheet at May 31, 2011 has been derived from the audited consolidated financial statements at that date.