Note 3 - Fair Value Measurements (Details) - Liabilities Measured at Fair Value Unobservable Inputs (USD $) In Thousands, unless otherwise specified			3 Months Ended
	Mar. 31, 2014	Mar. 10, 2014	Mar. 31, 2014 Fair Value, Inputs, Level 3 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance	$ 9,087	$ 7,404
Derivative warrants issued to investors in connection with the March 2014 Financing			7,404
Fair value adjustment at end of period, included in statement of operations			1,683
Balance	$ 9,087	$ 7,404	$ 9,087