Restatement of Consolidated Financial Statments Restatement (Details) - Condensed Consolidated Balance Sheets (USD $)	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Cash and Cash Equivalents, at Carrying Value	$ 32,017,490				$ 49,256,930				$ 6,332,053	$ 14,496,313
Accounts Receivable, Net, Current	970,288				2,637,103
Inventory	17,641,922				0
Prepaid Expense and Other Assets, Current	801,149				356,898
Deferred tax assets	33,515,327				727,772
Assets, Current	84,946,176	42,540,233	46,578,955	46,636,330	52,978,703	14,538,719	17,240,832	20,423,847
Property, Plant and Equipment, Net	987,869				818,992
Accounts receivable	3,771,219				0
Deferred costs	2,841,534				250,072
Goodwill	898,334				898,334
Other assets	2,181,720				285,345
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	10,209,278				35,149,031
Total assets	105,836,130	92,051,992	92,640,990	89,027,621	90,380,477	50,784,094	51,968,582	22,627,346
Accounts Payable, Current	10,189,917				2,278,316
Accrued expenses and other current liabilities	4,283,849				4,644,461
Common stock warrants, current	333,793				125,841
Long-term debt, current maturities	954,738				0
Liabilities, Current	15,762,297				7,048,618
Deferred revenue	57,052,020				41,001,110
Common stock warrants, noncurrent	657,246	1,788,682	1,789,716	2,380,660	1,412,304	2,402,720	13,791,303	21,278,533
Long-term debt, excluding current maturities	3,955,262				0
Other liabilities	166,303	59,562,651	57,661,062	50,017,901	147,586	3,779,449	3,268,952	3,474,238
Total liabilities	77,593,128	61,586,379	59,551,415	52,555,575	49,609,618	6,415,668	18,747,015	24,752,771
Common Stock, Value, Issued	5,164	5,164	5,164	5,164	5,164	5,142	5,131	5,038
Additional Paid in Capital, Common Stock	167,588,374				166,056,692
Accumulated deficit	(139,350,536)	(136,732,180)	(133,673,444)	(129,906,606)	(125,290,997)	(120,230,033)	(128,556,342)	(155,902,139)
Total stockholders' equity	28,243,002	30,465,613	33,089,575	36,472,046	40,770,859	44,368,426	33,221,567	(2,125,425)	(12,912,917)	(3,489,473)
Total liabilities and stockholders' equity	105,836,130	92,051,992	92,640,990	89,027,621	90,380,477	50,784,094	51,968,582	22,627,346
Scenario, Previously Reported [Member]
Cash and Cash Equivalents, at Carrying Value	32,017,490				49,256,930				6,332,053	14,496,313
Accounts Receivable, Net, Current	970,288				2,637,103
Inventory	17,641,922				0
Prepaid Expense and Other Assets, Current	801,149				356,898
Deferred tax assets	33,515,327				727,772
Assets, Current	84,946,176	42,540,233	46,578,955	46,636,330	52,978,703	14,538,719	17,240,832	20,423,847
Property, Plant and Equipment, Net	987,869				818,992
Accounts receivable	3,771,219				0
Deferred costs	2,841,534				250,072
Goodwill	898,334				898,334
Other assets	2,181,720				285,345
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	10,209,278				35,149,031
Total assets	105,836,130	92,051,992	92,640,990	89,027,621	90,380,477	50,784,094	51,968,582	22,627,346
Accounts Payable, Current	10,189,917				2,278,316
Accrued expenses and other current liabilities	4,283,849				4,644,461
Common stock warrants, current	287,036				0
Long-term debt, current maturities	954,738				0
Liabilities, Current	15,715,540				6,922,777
Deferred revenue	57,052,020				41,001,110
Common stock warrants, noncurrent	0	749,771	734,739	1,059,751	622,938	1,024,987	5,751,035	7,790,886
Long-term debt, excluding current maturities	3,955,262				0
Other liabilities	166,303	59,562,651	57,661,062	50,017,901	147,586	3,779,449	3,268,952	3,474,238
Total liabilities	76,889,125	60,312,422	58,395,801	51,077,652	48,694,411	4,804,436	9,019,987	11,265,124
Common Stock, Value, Issued	5,164	5,164	5,164	5,164	5,164	5,142	5,131	5,038
Additional Paid in Capital, Common Stock	152,340,303				150,551,211
Accumulated deficit	(123,398,462)	(120,210,152)	(117,269,759)	(112,923,202)	(108,870,309)	(103,113,320)	(103,323,833)	(127,165,760)
Total stockholders' equity	28,947,005	31,739,570	34,245,189	37,949,969	41,686,066	45,979,658	42,948,595	11,362,222
Total liabilities and stockholders' equity	105,836,130	92,051,992	92,640,990	89,027,621	90,380,477	50,784,094	51,968,582	22,627,346
Revised Adjustment [Member]
Cash and Cash Equivalents, at Carrying Value	0
Assets, Current	0
Total assets	0
Common stock warrants, current	46,757
Liabilities, Current	46,757
Common stock warrants, noncurrent	657,246	1,038,911	1,054,977	1,320,909
Total liabilities	704,003	1,273,957	1,155,614	1,477,923
Additional Paid in Capital, Common Stock	15,248,071
Accumulated deficit	(15,952,074)	(16,522,028)	(16,403,685)	(16,983,404)
Total stockholders' equity	(704,003)	(1,273,957)	(1,155,614)	(1,477,923)
Total liabilities and stockholders' equity	0	0	0	0
Restatement Adjustment [Member]
Cash and Cash Equivalents, at Carrying Value					0				0
Assets, Current					0
Total assets					0
Common stock warrants, current					125,841
Liabilities, Current					125,841
Common stock warrants, noncurrent					789,366	1,377,733	8,040,268	13,487,647
Total liabilities					915,207	1,611,232	9,727,028	13,487,647
Additional Paid in Capital, Common Stock					15,505,481
Accumulated deficit					(16,420,688)	(17,116,713)	(25,232,509)	(28,736,379)
Total stockholders' equity					(915,207)	(1,611,232)	(9,727,028)	(13,487,647)
Total liabilities and stockholders' equity					$ 0	$ 0	$ 0	$ 0