Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 35,275	$ 46,519
Restricted cash	293
Accounts receivable, net	576	333
Product inventories, net	9,860	7,220
Prepaid expenses and other current assets	2,022	2,240
Total current assets	48,026	56,312
Property, plant and equipment, net	6,297	6,870
Patents, net	312	350
Total Assets	54,635	63,532
LIABILITIES AND STOCKHOLDERS' EQUITY
Trade accounts payable	6,225	5,870
Accrued salaries and benefits	928	1,132
Accrued warranty	383	354
Accrued liabilities	438	421
Deferred revenues	2,561	1,616
Warrant liabilities	475	654
Capital lease obligation	21	12
Total current liabilities	11,031	10,059
Total Liabilities	11,031	10,059
Common stock, no par value, unlimited shares authorized; 69,452,487 shares issued and outstanding at June 30, 2012 and December 31, 2011	245,617	245,617
Additional paid in capital	12,276	12,279
Accumulated deficit	(214,157)	(204,423)
Accumulated other comprehensive loss	(132)
Total stockholders' equity	43,604	53,473
Total Liabilities and Stockholders' Equity	$ 54,635	$ 63,532