Consolidated Statements of Shareholders' Equity - USD ($)	Preferred Stock [Member] Series B Preferred Stock [Member]	Preferred Stock [Member] Series A Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]	Class B Preferred Units [Member]	Total
Balance (in shares) at Dec. 31, 2019	0		15,885,314
Balance at Dec. 31, 2019	$ 0	$ 40,000,000	$ 0	$ 212,692,000	$ (211,786,000)	$ (571,000)	$ 49,050,000	$ 335,000
Accretion of discount associated with issuance of subsidiary equity	0	0	0	(300,000)	0	0	300,000	(300,000)
Preferred dividends	$ 0	0	$ 0	(16,770,000)	0	0	0	(16,770,000)
Stock option exercises and proceeds related thereto (in shares)	0		407,533
Stock option exercises and proceeds related thereto	$ 0	0	$ 0	1,326,000	0	0	0	1,326,000
Compensatory stock issuances, net of forfeitures (in shares)	0		68,040
Compensatory stock issuances, net of forfeitures	$ 0	0	$ 0	0	0	0	0	0
Contributions by owners of noncontrolling interests	0		0	0	0	0	50,000,000	0
Deferred stock-based compensation costs	$ 0	0	$ 0	1,355,000	0	0	0	$ 1,355,000
Redemption and retirement of shares (in shares)	0		(245,534)					(245,534)
Redemption and retirement of shares	$ 0	0	$ 0	(3,353,000)	0	0	0	$ (3,353,000)
Net income (loss)	0	0	0	0	94,120,000	(203,000)		93,917,000
Redemption and retirement of shares	$ 0	0	$ 0	(3,353,000)	0	0	0	(3,353,000)
Balance (in shares) at Dec. 31, 2020	0		16,115,353
Balance at Dec. 31, 2020	$ 0	40,000,000	$ 0	194,950,000	(117,666,000)	(774,000)	99,350,000	76,510,000
Accretion of discount associated with issuance of subsidiary equity	0	0	0	(300,000)	0	0	300,000	(300,000)
Preferred dividends	$ 0	0	$ 0	(22,063,000)	0	0	0	$ (22,063,000)
Stock option exercises and proceeds related thereto (in shares)	0		526,015					526,015
Stock option exercises and proceeds related thereto	$ 0	0	$ 0	1,885,000	0	0	0	$ 1,885,000
Compensatory stock issuances, net of forfeitures (in shares)	0		56,654
Compensatory stock issuances, net of forfeitures	$ 0	0	$ 0	0	0	0	0	0
Contributions by owners of noncontrolling interests	0	0	0	0	0	387,000	0	387,000
Deferred stock-based compensation costs	$ 0	0	$ 0	3,240,000	0	0	0	$ 3,240,000
Redemption and retirement of shares (in shares)	0		(1,893,614)					(434,381)
Redemption and retirement of shares	$ 0	0	$ 0	(25,219,000)	0	0	0	$ (25,219,000)
Net income (loss)	$ 0	0	$ 0	0	177,902,000	(113,000)	0	177,789,000
Issuance of series B preferred stock, net (in shares)	3,188,533		0
Issuance of series B preferred stock, net	$ 0	0	$ 0	75,270,000	0	0	0	75,270,000
Redemption and retirement of shares	$ 0	0	$ 0	(25,219,000)	0	0	0	(25,219,000)
Balance (in shares) at Dec. 31, 2021	3,188,533		14,804,408
Balance at Dec. 31, 2021	$ 0	$ 40,000,000	$ 0	$ 227,763,000	$ 60,236,000	$ (500,000)	$ 99,650,000	$ 287,499,000