Loss per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
(Loss) Earnings Per Share, Diluted, by Common Class, Including Two Class Method
Weighted Average Shares, Basic (in shares)	35,783,000			35,491,000			35,649,000	35,390,000
(Loss) Earnings per Share, basic (in dollars per share)	$ (1.36)			$ (5.12)			$ (7.78)	$ (5.66)
Effect of dilutive securities
Restricted stock awards	$ 0			$ 0			$ 0	$ 0
Restricted stock awards (in shares)	0			0			0	0
Performance share units	$ 0			$ 0			$ 0	$ 0
Performance share units (in shares)	0			0			0	0
Warrants	$ 0			$ 0			$ 0	$ 0
Warrants (in shares)	0			0			0	0
Stock options	$ 0			$ 0			$ 0
Stock options (in shares)	0			0			0
Diluted (loss) earnings	$ (48,749)			$ (181,602)			$ (277,198)	$ (200,163)
Weighted average shares, diluted (in shares)	35,783,000			35,491,000			35,649,000	35,390,000
(Loss) Earnings Per Share, diluted (in dollars per share)	$ (1.36)			$ (5.12)			$ (7.78)	$ (5.66)
Potentially Dilutive Securities
Net loss	$ (48,749)	$ (215,779)	$ (12,670)	$ (181,602)	$ (13,284)	$ (5,277)	$ (277,198)	$ (200,163)
Restricted Stock awards
Potentially Dilutive Securities
Antidilutive securities excluded from computation of (loss) earnings per share (in shares)	0			0			0	0
Performance Share Units
Potentially Dilutive Securities
Antidilutive securities excluded from computation of (loss) earnings per share (in shares)	0			0			0	0
Warrants
Potentially Dilutive Securities
Antidilutive securities excluded from computation of (loss) earnings per share (in shares)	0			0			0	0
Stock Option
Potentially Dilutive Securities
Antidilutive securities excluded from computation of (loss) earnings per share (in shares)	0			0			0	0