Loss Per Share - Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Earnings Per Share [Abstract]
Net loss	$ (5,007)	$ (1,407)
Less: Dividend paid in-kind to preferred stockholders	(20)	0
Less: Deemed dividend on preferred stock	(3,734)	0
Net loss attributable to common stockholders	(8,761)	(1,407)
Loss per share - basic:
Numerator for basic loss per share	$ (8,761)	$ (1,407)
Denominator for basic loss per share (shares)	14,694,613	14,632,988
Basic loss per common share (usd per share)	$ (0.60)	$ (0.10)
Loss per share - diluted:
Numerator for basic loss per share	$ (8,761)	$ (1,407)
Adjust: Warrant revaluation income for dilutive warrants	7	1,958
Net loss attributable to common stockholders - diluted	$ (8,768)	$ (3,365)
Denominator for basic loss per share (shares)	14,694,613	14,632,988
Incremental shares underlying dilutive in the money warrants outstanding (shares)	2,597	24,023
Denominator for diluted loss per share (shares)	14,697,210	14,657,011
Diluted net loss per common share (usd per share)	$ (0.60)	$ (0.23)