Note 6 - Convertible Debt (PIK Notes) - Convertible Debt PIK Notes (Details) - USD ($)	Mar. 31, 2017	Dec. 31, 2016	Nov. 03, 2014	Aug. 05, 2013
Less: Discount	$ (14,098,885)	$ (15,143,123)
Payment in Kind (PIK) Note [Member]
PIK Note Payable, Gross	38,956,777	38,196,966
Less: Discount	(14,098,885)	(15,143,123)
Less: Deferred Financing Cost	(11,875)	(13,750)
PIK Note Payable, Net	24,846,017	23,040,093
PIK Note Derivative Liability	1,283,475	2,176,552
Payment in Kind (PIK) Note [Member] | Series 2023 Notes [Member]
PIK Note Payable, Gross	14,774,562	14,071,008		$ 10,500,000
Less: Discount	(1,683,046)	(1,721,898)
Less: Deferred Financing Cost	(4,373)	(5,064)
PIK Note Payable, Net	13,087,143	12,344,046
PIK Note Derivative Liability	92,341	142,909
Payment in Kind (PIK) Note [Member] | Series A Notes [Member]
PIK Note Payable, Gross	24,182,215	24,125,958	$ 19,848,486
Less: Discount	(12,415,839)	(13,421,225)	$ (7,348,486)
Less: Deferred Financing Cost	(7,502)	(8,686)
PIK Note Payable, Net	11,758,874	10,696,047
PIK Note Derivative Liability	$ 1,191,134	$ 2,033,643