CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jul. 31, 2014		Jul. 31, 2013
Cash flows from operating activities:
Net income	$ 70		$ 670
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	59		46
Warranty reserve expense	23		171
Loss on disposal of equipment	0		25
Deferred income taxes	0		405
Changes in operating assets and liabilities:
Accounts receivable	(1,076)		276
Deferred cost of revenues	(16)		(59)
Inventories	149		621
Other current and noncurrent assets	9		101
Accounts payable	249		(1,115)
Accrued payroll and related taxes	(141)		57
Warranty reserves	(11)		(54)
Other liabilities	(1)		30
Deferred revenues	70		(1,720)
Net cash used in operating activities	(616)		(546)
Cash flows from investing activities:
Additions to equipment, furniture and fixtures	(36)		(79)
Net cash used in investing activities	(36)		(79)
Net decrease in cash and cash equivalents	(652)		(625)
Cash and cash equivalents at beginning of period	10,444	[1]	7,259
Cash and cash equivalents at end of period	$ 9,792		$ 6,634

[1] Derived from the consolidated audited financial statements included in the Company's Annual Report on Form 10-K for the fiscal year ended April 30, 2014 filed with the SEC.