Consolidated Balance Sheets (Current Period Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 3,293	$ 12,372
Restricted cash	15,515	6,245
Accounts receivable, net	1,473	1,498
Product inventories, net	5,229	7,416
Prepaid expenses and other assets	1,846	937
Deferred contract costs	1,831	4,532
Total current assets	30,978	34,754
Restricted cash		11,803
Property, Plant, and Equipment	11,702	4,076
Total Assets	66,607	66,389
Current Liabilities
Trade accounts payable	2,860	2,599
Accrued salaries and benefits	676	632
Accrued warranty	634	418
Accrued liabilities	376	384
Deferred revenues	5,639	7,218
Warrant liabilities	120	90
Notes payable, current	11,533	6,680
Capital lease obligation	6	5
Total current liabilities	21,844	18,026
Deferred income	17,627	11,803
Capital lease obligation, less current portion		4
Total Liabilities	39,471	29,833
Stockholders' equity
Common stock, $.001 par value, 200,000,000 shares authorized; 11,590,067 shares issued and outstanding at September 30, 2013 and December 31, 2012	12	12
Additional paid in capital	259,198	259,065
Accumulated deficit	(232,558)	(222,409)
Accumulated other comprehensive income (loss)	484	(112)
Total stockholders' equity	27,136	36,556
Total Liabilities and Stockholders' Equity	66,607	66,389
Prepaid equipment purchases	1,351
Excluding Related Party [Member]
Current assets
Prepaid expenses and other assets	1,846	937
Related Party [Member]
Current assets
Prepaid expenses and other assets	1,791	1,754
Held and Not Used [Member]
Current assets
Property, Plant, and Equipment		1,857
Patents [Member]
Current assets
Intangible Assets	217	274
Land Use Right [Member]
Current assets
Intangible Assets	$ 22,359	$ 13,625