CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 1,863	$ 258
Restricted cash	500
Accounts receivable, net of allowance of $2 at March 31, 2013 and December 31, 2012, respectively	374	402
Inventories	89	182
Prepaid expenses and other current assets	661	178
Total current assets	3,487	1,020
Equipment, furniture and leasehold improvements, net	76	67
Other assets	4	4
Total assets	3,567	1,091
Current liabilities:
Accounts payable	340	377
Accrued compensation	67	78
Accrued other	257	368
Deferred revenue	248	317
Total current liabilities	912	1,140
Convertible notes	9,482	8,098
Warrant and option liabilities	12,481	3,800
Commitments and Contingencies (Note 7)
Stockholders' deficit:
Common stock, no par value, unlimited shares authorized, 55,794 shares issued and outstanding; 7,000 unissued and reserved at March 31, 2013; and 32,434 shares issued and outstanding at December 31, 2012	94,737	93,893
Additional paid in capital	1,141	1,540
Accumulated deficit	(114,920)	(107,114)
Accumulated other comprehensive loss	(266)	(266)
Total stockholders' deficit	(19,308)	(11,947)
Total liabilities and stockholders' deficit	$ 3,567	$ 1,091