Condensed Balance Sheets (USD $)	Mar. 31, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 12,553,811	$ 11,298,885
Investments	6,368,836	12,616,097
Trade receivables, net of allowance for doubtful accounts of $5,839	348,724	342,087
Inventories	2,321,028	2,469,123
Prepaid expenses and other current assets	701,911	386,624
Total current assets	22,294,310	27,112,816
Property, Plant and Equipment:	39,661,325	36,897,531
Less accumulated depreciation and amortization	(9,403,239)	(7,964,875)
Property, Plant and Equipment, Net	30,258,086	28,932,656
Other Assets:
Restricted cash	468,367	1,427,053
Deposits on manufacturing equipment	2,496,139	3,582,883
Patents, net of amortization of $32,957 and $28,248, respectively	329,756	308,785
Other non-current assets	59,375	60,312
Total Other Assets	3,353,637	5,379,033
Total Assets	55,906,033	61,424,505
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	566,042	658,834
Accrued expenses	1,804,899	1,846,997
Accrued property, plant and equipment	617,777	1,626,317
Deferred revenue	12,190	0
Current portion of long-term debt	252,174	648,059
Total current liabilities	3,253,082	4,780,207
Long-Term Debt	6,550,462	6,615,070
Accrued Warranty Liability	26,660	26,660
Commitments and Contingencies (Notes 4 & 13)
Stockholders' Equity:
Preferred stock, $0.0001 par value, 25,000,000 shares authorized, no shares outstanding	0	0
Common stock, $0.0001 par value, 125,000,000 shares authorized; 41,154,516 and 39,345,459 shares issued and outstanding at March 31, 2012 and December 31, 2011, respectively	4,115	3,935
Additional paid in capital	234,589,103	233,004,550
Deficit accumulated during the development stage	(188,517,442)	(183,006,936)
Accumulated other comprehensive income (loss)	53	1,019
Total stockholders' equity	46,075,829	50,002,568
Total Liabilities and Stockholders' Equity	$ 55,906,033	$ 61,424,505