Net Earnings (Loss) per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Basic:
Net income (loss)	$ (102,000)	$ (225,000)	$ 251,000
Less: net income attributable to participating rights	0	0	(14,000)
Net income (loss) attributable to common stockholders	$ (102,000)	$ (225,000)	$ 237,000
Weighted average common shares outstanding, basic (in shares)	211,436,542	199,260,410	199,141,090
Net earnings (loss) per share, basic (in dollars per share)	$ (0.48)	$ (1.13)	$ 1.19
Diluted:
Less: net income attributable to participating rights	$ 0	$ 0	$ (14,000)
Net income (loss) attributable to common stockholders	$ (102,000)	$ (225,000)	$ 237,000
Effect of dilutive potential common shares (in shares)	0	0	452,010
Weighted average common shares outstanding, diluted (in shares)	211,436,542	199,260,410	199,593,100
Net earnings (loss) per share, diluted (in dollars per share)	$ (0.48)	$ (1.13)	$ 1.19
Shares excluded from the computation of diluted shares (in shares)			233,700