CONSOLIDATED CONDENSED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Non-controlling Interests
Beginning balance at Dec. 31, 2018	$ 21,330,000	$ 0	$ 179,000	$ (10,473,000)	$ 8,046,000	$ 23,750,000	$ (172,000)	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	514,000					472,000		42,000
Other comprehensive income (loss), net of tax	(160,000)						(160,000)
Dividends on common stock	(1,877,000)					(1,877,000)
Dividends on preferred stock	(118,000)					(118,000)
Issuance of common stock and other, net	6,851,000		30,000		6,821,000
Issuance of preferred stock, net	9,762,000	9,762,000
Purchases of treasury stock	(180,000)			(180,000)
Fair value of noncontrolling interest acquired	4,875,000							4,875,000
Noncontrolling interest contributions, net	8,000							8,000
Ending balance at Sep. 30, 2019	41,005,000	9,762,000	209,000	(10,653,000)	14,867,000	22,227,000	(332,000)	4,925,000
Beginning balance at Jun. 30, 2019	21,347,000	0	179,000	(10,653,000)	8,157,000	23,848,000	(184,000)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(752,000)					(794,000)		42,000
Other comprehensive income (loss), net of tax	(148,000)						(148,000)
Dividends on common stock	(709,000)					(709,000)
Dividends on preferred stock	(118,000)					(118,000)
Issuance of common stock and other, net	6,740,000		30,000		6,710,000
Issuance of preferred stock, net	9,762,000	9,762,000
Fair value of noncontrolling interest acquired	4,875,000							4,875,000
Noncontrolling interest contributions, net	8,000							8,000
Ending balance at Sep. 30, 2019	41,005,000	9,762,000	209,000	(10,653,000)	14,867,000	22,227,000	(332,000)	4,925,000
Beginning balance at Dec. 31, 2019	34,232,000	9,762,000	209,000	(10,653,000)	14,955,000	20,180,000	(221,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(13,719,000)					(13,719,000)
Other comprehensive income (loss), net of tax	(62,000)						(62,000)
Dividends on common stock	(737,000)					(737,000)
Dividends on preferred stock	(200,000)		6,000		438,000	(644,000)
Issuance of common stock and other, net	243,000		1,000		242,000
Issuance of warrants on common stock	4,000				767,000	(763,000)
Berkshire warrants	103,000				103,000
Purchases of treasury stock	(4,000)			(4,000)
Ending balance at Sep. 30, 2020	19,860,000	9,762,000	216,000	(10,657,000)	16,505,000	4,317,000	(283,000)	4,925,000
Beginning balance at Jun. 30, 2020	23,346,000	9,762,000	213,000	(10,657,000)	16,235,000	8,105,000	(312,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(3,575,000)					(3,575,000)
Other comprehensive income (loss), net of tax	29,000						29,000
Dividends on common stock	(10,000)					(10,000)
Dividends on preferred stock	19,000		3,000		219,000	(203,000)
Issuance of common stock and other, net	51,000				51,000	0
Ending balance at Sep. 30, 2020	$ 19,860,000	$ 9,762,000	$ 216,000	$ (10,657,000)	$ 16,505,000	$ 4,317,000	$ (283,000)	$ 4,925,000