Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Nov. 30, 2013		Nov. 30, 2012
Cash flows from operating activities:
Net loss	$ (29)		$ (1,107)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Stock-based compensation expense	390		226
Provision for doubtful accounts	5		5
Loss on disposal of asset	9		0
Depreciation and amortization	95		170
Changes in operating assets and liabilities:
Accounts receivable	(58)		(297)
Inventories	(281)		(304)
Prepaid expenses and other	(146)		(193)
Accounts payable	711		54
Accrued expenses	(183)		201
Customer deposits and deferred revenue	16		39
Income tax payable	(47)		14
Deferred lease commitment	(47)		(37)
Net cash provided by (used in) operating activities	435		(1,229)
Cash flows from investing activities:
Purchase of property and equipment	(52)		(21)
Net cash used in investing activities	(52)		(21)
Cash flows from financing activities:
Line of credit (repayments) borrowings, net	(625)		277
Proceeds from issuance of common stock and excercise of stock options	423		180
Net cash (used in) provided by financing activities	(202)		457
Effect of exchange rates on cash	(11)		(88)
Net increase (decrease) in cash and cash equivalents	170		(881)
Cash and cash equivalents, beginning of period	2,324	[1]	2,073
Cash and cash equivalents, end of period	2,494		1,192
Supplemental disclosure of non-cash flow information:
Net change in capitalized share-based compensation	$ 0		$ 67

[1] The condensed consolidated balance sheet at May 31, 2013 has been derived from the audited consolidated financial statements at that date.