Segments (Summary of Segment Operating Results) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Segments reporting
Total revenues	$ 196,289	$ 210,226
Depreciation and amortization	(52,009)	(48,593)
Other income (loss), net	4,981	(221)
Equity in earnings (losses) from unconsolidated ventures	(4,802)	17,912
Gain (loss) on sale or disposal of real estate and other assets, net	4,730	(9)
Gain (loss) on extinguishment of debt	0	(282)
Income (loss) before income taxes	(23,905)	2,872
Net income (loss)	(22,627)	2,171
Net (income) loss attributable to noncontrolling interests	(118)	(49)
Net income (loss) attributable to common stockholders	(22,745)	2,122
Operating segments
Segments reporting
Total revenues	196,275	210,211
Total operating expenses	(111,925)	(120,447)
Segment operating income (loss)	84,350	89,764
Depreciation and amortization	(51,209)	(47,675)
Interest income (expense), net	(9,850)	(5,754)
Other income (loss), net	2,274	(304)
Equity in earnings (losses) from unconsolidated ventures	(4,802)	17,912
Gain (loss) on sale or disposal of real estate and other assets, net	4,730	(9)
Gain (loss) on extinguishment of debt		(282)
Income (loss) before income taxes	25,493	53,652
Corporate
Segments reporting
Corporate income, expenses, and other items	(48,120)	(51,481)
Operating Assets Segment
Segments reporting
Total revenues	100,925	99,687
Operating Assets Segment | Operating segments
Segments reporting
Total revenues	100,925	99,687
Total operating expenses	(47,599)	(46,615)
Segment operating income (loss)	53,326	53,072
Depreciation and amortization	(39,632)	(38,430)
Interest income (expense), net	(28,911)	(20,118)
Other income (loss), net	2,282	(169)
Equity in earnings (losses) from unconsolidated ventures	1,905	15,175
Gain (loss) on sale or disposal of real estate and other assets, net	4,730	0
Gain (loss) on extinguishment of debt		(282)
Income (loss) before income taxes	(6,300)	9,248
MPC Segment
Segments reporting
Total revenues	77,013	80,692
MPC Segment | Operating segments
Segments reporting
Total revenues	77,013	80,692
Total operating expenses	(34,351)	(36,896)
Segment operating income (loss)	42,662	43,796
Depreciation and amortization	(107)	(90)
Interest income (expense), net	15,812	10,422
Other income (loss), net	(103)	0
Equity in earnings (losses) from unconsolidated ventures	4,108	5,550
Gain (loss) on sale or disposal of real estate and other assets, net	0	0
Gain (loss) on extinguishment of debt		0
Income (loss) before income taxes	62,372	59,678
Seaport Segment
Segments reporting
Total revenues	11,897	9,376
Seaport Segment | Operating segments
Segments reporting
Total revenues	11,897	9,376
Total operating expenses	(18,916)	(18,859)
Segment operating income (loss)	(7,019)	(9,483)
Depreciation and amortization	(10,527)	(7,823)
Interest income (expense), net	1,186	(47)
Other income (loss), net	1	350
Equity in earnings (losses) from unconsolidated ventures	(10,820)	(3,711)
Gain (loss) on sale or disposal of real estate and other assets, net	0	0
Gain (loss) on extinguishment of debt		0
Income (loss) before income taxes	(27,179)	(20,714)
Strategic Developments Segment
Segments reporting
Total revenues	6,440	20,456
Strategic Developments Segment | Operating segments
Segments reporting
Total revenues	6,440	20,456
Total operating expenses	(11,059)	(18,077)
Segment operating income (loss)	(4,619)	2,379
Depreciation and amortization	(943)	(1,332)
Interest income (expense), net	2,063	3,989
Other income (loss), net	94	(485)
Equity in earnings (losses) from unconsolidated ventures	5	898
Gain (loss) on sale or disposal of real estate and other assets, net	0	(9)
Gain (loss) on extinguishment of debt		0
Income (loss) before income taxes	$ (3,400)	$ 5,440