Commitments and Contingencies (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Financial Condition and Liquidity [Abstract]
Working capital	$ (1.6)	$ (4.1)
Costa Brava [Member]
Legal Proceedings [Line Items]
Percentage of public preferred stock owned	12.70%
Wynnefield [Member]
Legal Proceedings [Line Items]
Percentage of public preferred stock owned	17.40%