CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2013	Apr. 30, 2013
Current assets:
Cash and cash equivalents	$ 6,634	$ 7,259	[1]
Certificates of deposit	1,245	1,245	[1]
Accounts receivable, net of allowance for doubtful accounts of $75	1,778	2,054	[1]
Deferred cost of revenues	191	132	[1]
Inventories	3,044	3,665	[1]
Deferred income taxes	1,150	1,555	[1]
Other current assets	198	298	[1]
Total current assets	14,240	16,208	[1]
Equipment, furniture and fixtures, net	581	573	[1]
Other noncurrent assets	52	53	[1]
Total assets	14,873	16,834	[1]
Current liabilities:
Accounts payable	1,065	2,180	[1]
Accrued payroll and related taxes	441	384	[1]
Warranty reserves	256	139	[1]
Payable to Parent	202	202	[1]
Other current liabilities	68	38	[1]
Deferred revenues	3,731	5,451	[1]
Total current liabilities	5,763	8,394	[1]
Commitments and contingencies			[1]
Shareholders' equity:
Preferred shares, no par value; 20,000 shares authorized; no shares issued or outstanding	0	0	[1]
Common shares, no par value; 50,000 shares authorized; 12,963 shares issued and outstanding	56,370	56,370	[1]
Accumulated deficit	(47,260)	(47,930)	[1]
Total shareholders' equity	9,110	8,440	[1]
Total liabilities and shareholders' equity	$ 14,873	$ 16,834	[1]

[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, 2013 filed with the SEC.