Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
A reconciliation between basic and diluted earnings per share computations
Loss available to common stockholders	$ (3,385)	$ (24,143)	$ (8,303)	$ (63,280)
Net income (loss) available to common stockholders (in shares)	21,215	17,539	21,212	17,248
Net income (loss) available to common stockholders (in dollars per share)	$ (0.16)	$ (1.38)	$ (0.39)	$ (3.67)
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)	$ (3,385)	$ (24,143)	$ (8,303)	$ (63,280)
DILUTED EPS (in shares)	21,215	17,539	21,212	17,248
DILUTED EPS (in dollars per share)	$ (0.16)	$ (1.38)	$ (0.39)	$ (3.67)