Segments (Summary of Segment Operating Results) (Details) $ in Thousands	1 Months Ended	3 Months Ended
	Sep. 30, 2021 property	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)
Segments reporting
Total revenues		$ 210,226	$ 190,580
Depreciation and amortization		(48,593)	(49,308)
Other income (loss), net		(221)	(10,308)
Equity in earnings (losses) from real estate and other affiliates		17,912	15,796
Gain (loss) on sale or disposal of real estate and other assets, net		(9)	0
Gain (loss) on extinguishment of debt		(282)	(35,915)
Income (loss) before income taxes		2,872	(89,364)
Net income (loss)		2,171	(68,159)
Net (income) loss attributable to noncontrolling interests		(49)	1,565
Net income (loss) attributable to common stockholders, basic		2,122	(66,594)
Number of properties sold | property	3
Operating segments
Segments reporting
Total revenues		210,211	190,479
Total operating expenses		(120,447)	(142,630)
Segment operating income (loss)		89,764	47,849
Depreciation and amortization		(47,675)	(48,156)
Interest income (expense), net		(5,754)	(7,040)
Other income (loss), net		(304)	(10,434)
Equity in earnings (losses) from real estate and other affiliates		17,912	15,796
Gain (loss) on sale or disposal of real estate and other assets, net		(9)
Gain (loss) on extinguishment of debt		(282)	(836)
Income (loss) before income taxes		53,652	(2,821)
Corporate
Segments reporting
Corporate income, expenses and other items		(51,481)	(65,338)
Operating Assets
Segments reporting
Total revenues		99,687	96,439
Operating Assets | Operating segments
Segments reporting
Total revenues		99,687	96,439
Total operating expenses		(46,615)	(47,234)
Segment operating income (loss)		53,072	49,205
Depreciation and amortization		(38,430)	(39,651)
Interest income (expense), net		(20,118)	(19,000)
Other income (loss), net		(169)	(10,098)
Equity in earnings (losses) from real estate and other affiliates		15,175	(11,404)
Gain (loss) on sale or disposal of real estate and other assets, net		0
Gain (loss) on extinguishment of debt		(282)	(836)
Income (loss) before income taxes		9,248	(31,784)
Operating Assets | Operating segments | Hospitality Revenue
Segments reporting
Total revenues			7,700
Total operating expenses			(7,900)
MPC Segment
Segments reporting
Total revenues		80,692	48,287
MPC Segment | Operating segments
Segments reporting
Total revenues		80,692	48,287
Total operating expenses		(36,896)	(23,267)
Segment operating income (loss)		43,796	25,020
Depreciation and amortization		(90)	(72)
Interest income (expense), net		10,422	10,757
Other income (loss), net		0	0
Equity in earnings (losses) from real estate and other affiliates		5,550	27,650
Gain (loss) on sale or disposal of real estate and other assets, net		0
Gain (loss) on extinguishment of debt		0	0
Income (loss) before income taxes		59,678	63,355
Seaport Segment
Segments reporting
Total revenues		9,376	7,453
Seaport Segment | Operating segments
Segments reporting
Total revenues		9,376	7,453
Total operating expenses		(18,859)	(12,506)
Segment operating income (loss)		(9,483)	(5,053)
Depreciation and amortization		(7,823)	(6,835)
Interest income (expense), net		(47)	102
Other income (loss), net		350	(336)
Equity in earnings (losses) from real estate and other affiliates		(3,711)	(352)
Gain (loss) on sale or disposal of real estate and other assets, net		0
Gain (loss) on extinguishment of debt		0	0
Income (loss) before income taxes		(20,714)	(12,474)
Strategic Developments Segment
Segments reporting
Total revenues		20,456	38,300
Strategic Developments Segment | Operating segments
Segments reporting
Total revenues		20,456	38,300
Total operating expenses		(18,077)	(59,623)
Segment operating income (loss)		2,379	(21,323)
Depreciation and amortization		(1,332)	(1,598)
Interest income (expense), net		3,989	1,101
Other income (loss), net		(485)	0
Equity in earnings (losses) from real estate and other affiliates		898	(98)
Gain (loss) on sale or disposal of real estate and other assets, net		(9)
Gain (loss) on extinguishment of debt		0	0
Income (loss) before income taxes		$ 5,440	$ (21,918)