CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 1,404	$ 258
Restricted cash	250
Accounts receivable, net of allowance of $2 at September 30, 2013 and December 31, 2012, respectively	488	402
Inventories	145	182
Prepaid expenses and other current assets	144	178
Total current assets	2,431	1,020
Equipment, furniture and leasehold improvements, net	50	67
Other assets	4	4
Total assets	2,485	1,091
Current liabilities:
Accounts payable	443	377
Accrued compensation	41	78
Accrued other	331	368
Deferred revenue	13	317
Total current liabilities	828	1,140
Convertible notes	5,793	8,098
Warrant and option liabilities	6,452	3,800
Commitments and contingencies (Note 7)
Stockholders' deficit:
Common stock, no par value, unlimited shares authorized, 125,000 shares issued and outstanding; 37,538 unissued and reserved at September 30, 2013; and 32,434 shares issued and outstanding at December 31, 2012	97,263	93,893
Additional paid in capital		1,540
Accumulated deficit	(107,586)	(107,114)
Accumulated other comprehensive loss	(265)	(266)
Total stockholders' deficit	(10,588)	(11,947)
Total liabilities and stockholders' deficit	$ 2,485	$ 1,091