Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
A reconciliation between basic and diluted earnings per share computations
Loss available to common stockholders	$ (3,085)	$ (23,306)	$ (11,387)	$ (86,586)
Net income (loss) available to common stockholders (in shares)	21,230	17,736	21,222	17,412
Net income (loss) available to common stockholders (in dollars per share)	$ (0.15)	$ (1.31)	$ (0.54)	$ (4.97)
Stock options, Effect of dilutive securities	$ 0	$ 0		$ 0
Stock options, effect of dilutive securities, (in shares)	0	0		0
Attributable to participating securities	$ 0	$ 0		$ 0
Restricted stock, effect of dilutive securities (in shares)	0	0	0	0
DILUTED EPS, Income (Loss)	$ (3,085)	$ (23,306)	$ (11,387)	$ (86,586)
DILUTED EPS (in shares)	21,230	17,736	21,222	17,412
DILUTED EPS (in dollars per share)	$ (0.15)	$ (1.31)	$ (0.54)	$ (4.97)