Note 5 - Convertible Debt (PIK Notes) - Convertible Debt PIK Notes (Details) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Less: Unamortized Discount	$ (12,875,047)	$ (15,143,123)
Payment in Kind (PIK) Note [Member]
Less: Unamortized Discount	(12,866,069)	(15,143,123)
Less: Unamortized Deferred Financing Cost	(10,000)	(13,750)
PIK Note Payable, Net	27,288,028	23,040,093
PIK Note Derivative Liability	564,749	2,176,552
PIK Note Payable, Gross	40,164,097	38,196,966
Payment in Kind (PIK) Note [Member] | Series 2023 Notes [Member]
Less: Unamortized Discount	(1,640,179)	(1,721,898)
Less: Unamortized Deferred Financing Cost	(3,682)	(5,064)
PIK Note Payable, Net	13,130,701	12,344,046
PIK Note Derivative Liability	46,170	142,909
PIK Note Payable, Gross	14,774,562	14,071,008
Payment in Kind (PIK) Note [Member] | Series A Notes [Member]
Less: Unamortized Discount	(11,225,890)	(13,421,225)
Less: Unamortized Deferred Financing Cost	(6,318)	(8,686)
PIK Note Payable, Net	14,157,327	10,696,047
PIK Note Derivative Liability	518,579	2,033,643
PIK Note Payable, Gross	$ 25,389,535	$ 24,125,958