Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2016		Aug. 31, 2015
Cash flows from operating activities:
Net (loss) income	$ (755)		$ 294
Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities:
Stock-based compensation expense	319		319
Provision for doubtful accounts	20		19
Amortization of debt issuance costs	44		37
Depreciation and amortization	68		37
Changes in operating assets and liabilities:
Accounts receivable	(1,250)		(1,257)
Inventories	1,374		(156)
Prepaid expenses and other current assets	(52)		(201)
Accounts payable	713		1,113
Accrued expenses	(181)		505
Customer deposits and deferred revenue	946		(2,804)
Income taxes payable	(2)		(2)
Net cash provided by (used in) operating activities	1,244		(2,096)
Cash flows from investing activities:
Purchases of property and equipment	(21)		(21)
Net cash used in investing activities	(21)		(21)
Cash flows from financing activities:
Proceeds from issuance of common stock under employee plans, net of taxes paid related to share settlement of equity awards	94		223
Net cash provided by financing activities	94		223
Effect of exchange rates on cash and cash equivalents	86		20
Net increase (decrease) in cash and cash equivalents	1,403		(1,874)
Cash and cash equivalents, beginning of period	939	[1]	5,527
Cash and cash equivalents, end of period	2,342		3,653
Supplemental disclosure of non-cash flow information
Net change in capitalized share-based compensation	0		(20)
Fair value of common stock issued to settle accounts payable	323		0
Transfers of property and equipment to inventories	$ 372		$ 0

[1] The condensed consolidated balance sheet at May 31, 2016 has been derived from the audited consolidated financial statements at that date.