Earnings (Losses) Per Share (Details) $ / shares in Units, shares in Thousands, $ in Thousands			3 Months Ended		9 Months Ended
	Apr. 22, 2020	Apr. 20, 2020	Sep. 30, 2020 USD ($) $ / shares shares	Sep. 30, 2019 USD ($) $ / shares shares	Sep. 30, 2020 USD ($) $ / shares shares	Sep. 30, 2019 USD ($) $ / shares shares
Net income (loss) (numerator):
Income (loss) from continuing operations, net of tax			$ (146,682)	$ (99,788)	$ (658,919)	$ (395,965)
Less: net (income) loss attributable to noncontrolling interest			(10,805)	(19,297)	(38,437)	(44,202)
Less: preferred stock dividends			(3,653)	(4,310)	(10,958)	(12,935)
Less: accrued distribution on redeemable noncontrolling interest in subsidiary			(4,353)	(5,176)	(13,092)	(15,358)
Less: distributed and undistributed earnings allocated to unvested shareholders				(114)	(125)	(347)
Adjusted income (loss) from continuing operations, net of tax - basic			(165,493)	(128,685)	(721,531)	(468,807)
Income (loss) from discontinued operations, net of tax			$ 22	$ 157	$ (48)	$ (34)
Weighted-average number of shares outstanding - basic | shares			7,064	7,041	7,056	7,029
Earnings (losses) Per Share:
Basic from continuing operations (in dollars per share) | $ / shares			$ (23.42)	$ (18.27)	$ (102.25)	$ (66.70)
Basic from discontinued operations (in dollars per share) | $ / shares				0.02	(0.01)
Total Basic (in dollars per share) | $ / shares			$ (23.42)	$ (18.25)	$ (102.26)	$ (66.70)
DILUTED EPS:
Adjusted income (loss) from continuing operations, net of tax - basic			$ (165,493)	$ (128,685)	$ (721,531)	$ (468,807)
Adjusted income (loss) from continuing operations, net of tax - diluted			(165,493)	(128,685)	(721,531)	(468,807)
Income (loss) from discontinued operations, net of tax			$ 22	$ 157	$ (48)	$ (34)
Weighted-average number of shares outstanding - basic | shares			7,064	7,041	7,056	7,029
Weighted-average number of shares outstanding - diluted | shares			7,064	7,041	7,056	7,029
Earnings (losses) per share:
Diluted from continuing operations (in dollars per share) | $ / shares			$ (23.42)	$ (18.27)	$ (102.25)	$ (66.70)
Diluted from discontinued operations (in dollars per share) | $ / shares				0.02	(0.01)
Total Diluted (in dollars per share) | $ / shares			$ (23.42)	$ (18.25)	$ (102.26)	$ (66.70)
Interest rate on senior notes due (as a percent)			7.25%		7.25%
Reverse stock split ratio	50	50
Minimum
Earnings (losses) per share:
Reverse stock split ratio		15
0.75% senior exchangeable notes due January 2024
Earnings (losses) per share:
Interest rate on senior notes due (as a percent)			0.75%		0.75%
0.75% senior exchangeable notes due January 2024 | Minimum
Earnings (losses) per share:
Share issued price (in dollars per share) | $ / shares			$ 1,257.81		$ 1,257.81