Consolidated Balance Sheets (Current Period Unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
ASSETS
Cash and cash equivalents	$ 8,676	$ 12,372
Restricted cash	6,104	6,245
Accounts receivable, net	843	1,498
Product inventories, net	4,766	7,416
Prepaid expenses and other assets	1,138	937
Total current assets	25,222	34,754
Restricted cash	3,000	11,803
Property, Plant, and Equipment	6,453	4,076
Total Assets	60,065	66,389
Other assets	1,182
Deferred contract costs	1,904	4,532
LIABILITIES AND STOCKHOLDERS' EQUITY
Trade accounts payable	1,555	2,599
Accrued salaries and benefits	515	632
Accrued warranty	589	418
Accrued liabilities	333	384
Deferred revenues	5,491	7,218
Warrant liabilities	100	90
Note payable, current	5,730	6,680
Capital lease obligation	6	5
Total current liabilities	14,319	18,026
Deferred income	13,943	11,803
Note payable	950
Capital lease obligation, less current portion	1	4
Total Liabilities	29,213	29,833
Common stock, $.001 par value, 200,000,000 shares authorized; 11,590,067 shares issued and outstanding at June 30, 2013 and December 31, 2012	246,667	246,667
Additional paid in capital	12,499	12,410
Accumulated deficit	(228,815)	(222,409)
Accumulated other comprehensive income (loss)	501	(112)
Total stockholders' equity	30,852	36,556
Total Liabilities and Stockholders' Equity	60,065	66,389
Excluding Related Party [Member]
ASSETS
Prepaid expenses and other assets	1,138	937
Related Party [Member]
ASSETS
Prepaid expenses and other assets	1,791	1,754
Held and Not Used [Member]
ASSETS
Property, Plant, and Equipment	1,638	1,857
Patents [Member]
ASSETS
Intangible Assets	236	274
Land Use Right [Member]
ASSETS
Intangible Assets	$ 22,334	$ 13,625