Earnings (Loss) per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
(Loss) Earnings Per Share, Diluted, by Common Class, Including Two Class Method
Basic earnings per share, Earnings (Loss)	$ 16,252	$ 35,043	$ (215,779)	$ (12,670)	$ 51,295	$ (228,449)
Basic shares outstanding, Weighted Average Shares (in shares)	36,416,000		35,611,000		36,187,000	35,581,000
Basic earnings per share, Earnings (Loss) Per Share (in dollars per share)	$ 0.45		$ (6.06)		$ 1.42	$ (6.42)
Effect of dilutive securities
Restricted stock units, Earnings (Loss)	$ 0				$ 0
Restricted stock units (Weighted Average Shares (in shares)	855,000				1,019,000
Restricted stock awards, Earnings (Loss)	$ 0		$ 0		$ 0	$ 0
Restricted stock awards, Weighted Average Shares (in shares)	36,000		0		39,000	0
Performance share units, Earnings (Loss)	$ 0		$ 0		$ 0	$ 0
Performance share units, Weighted Average Shares (in shares)	0		0		0	0
Warrants, Earnings (Loss)	$ 0		$ 0		$ 0
Warrants, Weighted Average Shares (in shares)	0		0		0
Stock options, Earnings (Loss)	$ 0		$ 0		$ 0	$ 0
Stock options, Weighted Average Shares (in shares)	38,000		0		38,000	0
Diluted earnings per share, Earnings (Loss)	$ 16,252		$ (215,779)		$ 51,295	$ (228,449)
Diluted (in shares)	37,345,000		35,611,000		37,283,000	35,581,000
Diluted earnings per share, Earnings (Loss) Per Share (in dollars per share)	$ 0.44		$ (6.06)		$ 1.38	$ (6.42)
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