Loss Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Loss [Abstract]
Net loss	$ (5,024)	$ (221)
Less: preferred stock dividends	(99)	(99)
Net loss applicable to common shareholders	$ (5,123)	$ (320)
Shares [Abstract]
Weighted average shares outstanding (in shares)	20,419	20,432
Per Share Amount [Abstract]
Net loss applicable to common shareholders (in dollars per share)	$ (0.25)	$ (0.02)