Earnings Per Share (Information Related to EPS Calculation) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net income (loss)
Net income (loss)	$ (68,159)	$ (125,082)
Net (income) loss attributable to noncontrolling interests	1,565	(52)
Net income (loss) attributable to common stockholders	$ (66,594)	$ (125,134)
Shares
Weighted-average common shares outstanding - basic (in shares)	55,678	43,380
Weighted-average common shares outstanding - diluted (in shares)	55,678	43,380
Net income (loss) per common share
Basic income (loss) per share (in dollars per share)	$ (1.20)	$ (2.88)
Diluted income (loss) per share (in dollars per share)	$ (1.20)	$ (2.88)