CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Apr. 30, 2014	Apr. 30, 2013
Current assets:
Cash and cash equivalents	$ 10,444	$ 7,259
Certificates of deposit	0	1,245
Accounts receivable, net of allowance for doubtful accounts of $75	712	2,054
Deferred cost of revenue	3	132
Inventories	1,398	3,665
Deferred income taxes	0	1,555
Other current assets	217	298
Total current assets	12,774	16,208
Equipment, furniture and fixtures, net	612	573
Other noncurrent assets	49	53
Total assets	13,435	16,834
Current liabilities:
Accounts payable	397	2,180
Accrued payroll and related taxes	640	384
Warranty reserves	188	139
Payable to Parent	152	202
Other current liabilities	41	38
Deferred revenues	470	5,451
Total current liabilities	1,888	8,394
Long-term liabilities	11	0
Total liabilities	1,899	8,394
Commitments and contingencies
Shareholders' equity:
Preferred shares, no par value; 20,000 shares authorized; no shares issued or outstanding	0	0
Common shares, no par value; 50,000 shares authorized; 12,963 shares issued and outstanding	56,370	56,370
Accumulated deficit	(44,834)	(47,930)
Total shareholders' equity	11,536	8,440
Total liabilities and shareholders' equity	$ 13,435	$ 16,834