Earnings Per Share (Information Related to EPS Calculation) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Net income (loss)
Net income (loss)	$ (544,135)	$ 107,669	$ (585,903)	$ 131,272
Net (income) loss attributable to noncontrolling interests	(46)	427	(166)	510
Net income (loss) attributable to common stockholders, basic	(544,181)	108,096	(586,069)	131,782
Net income (loss) attributable to common stockholders, diluted	$ (544,181)	$ 108,096	$ (586,069)	$ 131,782
Shares
Weighted-average common shares outstanding - basic (in shares)	49,616,000	49,445,000	49,551,000	50,880,000
Restricted stock and stock options (in shares)	0	26,000	0	32,000
Weighted-average common shares outstanding - diluted (in shares)	49,616,000	49,471,000	49,551,000	50,912,000
Net income (loss) per common share
Basic income (loss) per share (in dollars per share)	$ (10.97)	$ 2.19	$ (11.83)	$ 2.59
Diluted income (loss) per share (in dollars per share)	$ (10.97)	$ 2.19	$ (11.83)	$ 2.59
Restricted stock and stock options
Anti-dilutive shares excluded from diluted EPS
Anti-dilutive shares excluded from diluted EPS (in shares)	747,000	677,000	747,000	645,000
Warrants
Anti-dilutive shares excluded from diluted EPS
Anti-dilutive shares excluded from diluted EPS (in shares)	88,000	2,103,000	88,000	2,103,000