Note 8 - Note Payable - Victory Park (Detail) (USD $)	0 Months Ended	1 Months Ended		3 Months Ended		6 Months Ended		15 Months Ended	18 Months Ended							1 Months Ended		6 Months Ended	1 Months Ended	3 Months Ended
	Mar. 03, 2013	Sep. 30, 2012	May 29, 2012	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2012	Dec. 31, 2011	Dec. 31, 2010	Sep. 30, 2008	Jun. 30, 2012 Victory Park [Member]	Jun. 30, 2012 Minimum [Member] Victory Park [Member]	Jun. 30, 2012 Maximum [Member] Victory Park [Member]	Sep. 30, 2012 Maximum [Member]	Dec. 31, 2012 Accrued Interest Reclassed To Note [Member] Victory Park [Member]	Jun. 30, 2012 Three Consecutive Quarters [Member]	Mar. 31, 2010 Victory Park [Member]	Jun. 30, 2012 Victory Park [Member]	Jun. 30, 2011 Victory Park [Member]	Sep. 30, 2008 Victory Park [Member]	Dec. 31, 2011 Asset Sales [Member]	Dec. 31, 2011 Equity Sales [Member]	Dec. 31, 2011 Debt Financing [Member]	Dec. 31, 2011 Certain Milestone Payments [Member]	Sep. 30, 2008 Notes Payable [Member]
Debt Instrument, Face Amount												$ 33,000,000							$ 33,000,000			$ 15,000,000
Other Notes Payable																			19,358,000
Proceeds from Issuance of Debt	30,000,000	80,000,000	28,000,000													80,000,000			13,642,000
Fair Value Inputs, Discount Rate																			2.00%
Proceeds from Debt, Net of Issuance Costs																			11,635,000
Deferred Finance Costs, Net																				400,000
Debt Instrument, Unamortized Discount				3,439,791		3,439,791		3,439,791	3,439,791	5,335,294										3,440,000
Debt Instrument, Basis Spread on Variable Rate														5.00%	15.00%
Notes Payable										5,018,750							5,797,859
Percentage of Proceeds Due as Repayments on Victory Park																							50.00%	50.00%	100.00%	10.00%
Interest Expense, Debt						4,813,000	4,693,000													2,836,000	2,265,000
Debt Instrument, Convertible, Conversion Price (in Dollars per share)				$ 0.70		$ 0.70		$ 0.70	$ 0.70
Embedded Derivative, Fair Value of Embedded Derivative Liability				14,980,000	38,630,000	14,980,000	38,630,000	14,980,000	14,980,000	12,470,000	22,860,000	21,190,000
Convertible Debt, Fair Value Disclosures												45,000,000															23,810,000
Debt Instrument, Unamortized Premium												12,000,000
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net				(5,430,000)	10,670,000	(2,510,000)	(15,770,000)	10,670,000	(15,770,000)
Minimum Cash Required for Debt Covenant				2,500,000		2,500,000		2,500,000	2,500,000
Minimum Quarterly Cash Flow Required Under Debt Covenant						2,000,000												7,000,000
Cash and Cash Equivalents, at Carrying Value				$ 1,749,608	$ 9,118,503	$ 1,749,608	$ 9,118,503	$ 1,749,608	$ 1,749,608	$ 4,681,683	$ 12,200,800		$ 2,500,000