Consolidated Balance Sheets (Current Period Unaudited) (USD $)	Mar. 31, 2013	Dec. 31, 2012
ASSETS
Cash and cash equivalents	$ 10,925,000	$ 12,372,000
Restricted cash	8,035,000	6,245,000
Accounts receivable, net	715,000	1,498,000
Product inventories, net	6,156,000	7,416,000
Prepaid expenses and other assets	882,000	937,000
Total current assets	32,155,000	34,754,000
Restricted cash	9,821,000	11,803,000
Property, Plant, and Equipment	5,553,000	4,076,000
Total Assets	62,352,000	66,389,000
Deferred contract costs	2,799,000	4,532,000
LIABILITIES AND STOCKHOLDERS' EQUITY
Trade accounts payable	1,665,000	2,599,000
Accrued salaries and benefits	520,000	632,000
Accrued warranty	506,000	418,000
Accrued liabilities	360,000	384,000
Deferred revenues	7,142,000	7,218,000
Warrant liabilities	220,000	90,000
Note payable, current	6,680,000	6,680,000
Capital lease obligation	6,000	5,000
Total current liabilities	17,099,000	18,026,000
Deferred income	11,870,000	11,803,000
Capital lease obligation, less current portion	3,000	4,000
Total Liabilities	28,972,000	29,833,000
Common stock, $.001 par value, 200,000,000 shares authorized; 11,590,067 shares issued and outstanding at March 31, 2013 and December 31, 2012	246,667,000	246,667,000
Additional paid in capital	12,468,000	12,410,000
Accumulated deficit	(225,824,000)	(222,409,000)
Accumulated other comprehensive income (loss)	69,000	(112,000)
Total stockholders' equity	33,380,000	36,556,000
Total Liabilities and Stockholders' Equity	62,352,000	66,389,000
Excluding Related Party [Member]
ASSETS
Prepaid expenses and other assets	882,000	937,000
Related Party [Member]
ASSETS
Prepaid expenses and other assets	1,764,000	1,754,000
Held and Not Used [Member]
ASSETS
Property, Plant, and Equipment	1,811,000	1,857,000
Patents [Member]
ASSETS
Intangible Assets	255,000	274,000
Land Use Right [Member]
ASSETS
Intangible Assets	$ 13,636,000	$ 13,625,000