Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Feb. 29, 2016		Feb. 28, 2015
Cash flows from operating activities:
Net loss	$ (3,729)		$ (4,747)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	786		693
Provision for (recovery of) doubtful accounts	8		(44)
Amortization of debt issuance costs	126		0
Depreciation and amortization	123		98
Changes in operating assets and liabilities:
Accounts receivable	(592)		2,584
Inventories	(275)		(706)
Prepaid expenses and other	(34)		(129)
Accounts payable	1,068		6
Accrued expenses	434		(71)
Customer deposits and deferred revenue	(2,597)		663
Income taxes payable	(25)		21
Deferred rent	0		(8)
Net cash used in operating activities	(4,707)		(1,640)
Cash flows from investing activities:
Purchases of property and equipment	(890)		(106)
Net cash used in investing activities	(890)		(106)
Cash flows from financing activities:
Line of credit borrowings (repayments), net	2,000		(662)
Proceeds from issuance of common stock under private placement, net of issuance costs	0		2,574
Proceeds from issuance of common stock under employee plans	460		553
Net cash provided by financing activities	2,460		2,465
Effect of exchange rates on cash	82		(254)
Net (decrease) increase in cash and cash equivalents	(3,055)		465
Cash and cash equivalents, beginning of period	5,527	[1]	1,809
Cash and cash equivalents, end of period	2,472		2,274
Supplemental disclosure of non-cash flow information
Net change in capitalized share-based compensation	$ (20)		$ 29

[1] The condensed consolidated balance sheet at May 31, 2015 has been derived from the audited consolidated financial statements at that date.