Earnings Per Share (Earnings Allocable to Common Shares) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Numerator for basic and diluted earnings per share:
Net loss from continuing operations and allocable to common shareholders - Basic	$ (7,744)	$ (20,327)
Net loss from continuing operations and allocable to common shareholders - Diluted	(7,744)	(20,327)
Net income from discontinued operations - Basic	797,688	22,486
Net income from discontinued operations	797,688	22,486
Net income from discontinued operations attributable to noncontrolling interests	(179,089)	(2,564)
Net income (loss) allocable to common shareholders - Basic	610,855	(405)
Net income (loss) allocable to common shareholders - Diluted	$ 610,855	$ (405)
Denominator for basic and diluted earnings per share:
Weighted average common shares outstanding for basic earnings per common share	69,037,000	73,901,000
Weighted average common shares outstanding for diluted earnings per common share	69,037,000	73,901,000
Basic and diluted earnings per common share:
Net loss from continuing operations and allocable to common shareholders - Basic	$ (0.11)	$ (0.28)
Net loss from continuing operations and allocable to common shareholders - Diluted	(0.11)	(0.28)
Net income from discontinued operations - Basic	8.96	0.27
Net income from discontinued operations - Diluted	8.96	0.27
Net income (loss) allocable to common shareholders - Basic	8.85	(0.01)
Net income (loss) allocable to common shareholders - Diluted	$ 8.85	$ (0.01)
3.125% Senior Convertible Notes
Basic and diluted earnings per common share:
Antidilutive (in shares)	8,829,274	2,893,787
Stated interest rate	3.125%	3.125%