Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenues:
Rental revenue	$ 151,458	$ 148,290	$ 446,152	$ 445,143
Observatory revenue	37,562	33,051	93,149	73,660
Lease termination fees	0	0	0	20,032
Third-party management and other fees	268	389	1,076	1,025
Other revenue and fees	2,238	1,982	6,313	5,908
Total revenues	191,526	183,712	546,690	545,768
Operating expenses:
Property operating expenses	42,817	42,798	124,380	118,875
Ground rent expenses	2,331	2,331	6,994	6,994
General and administrative expenses	16,012	15,725	47,795	45,287
Observatory expenses	9,471	8,516	25,983	22,507
Real estate taxes	32,014	31,831	95,292	91,637
Depreciation and amortization	46,624	46,984	140,312	172,394
Total operating expenses	149,269	148,185	440,756	457,694
Total operating income (loss)	42,257	35,527	105,934	88,074
Other income (expense):
Interest income	4,462	1,564	10,396	2,144
Interest expense	(25,382)	(25,516)	(76,091)	(75,572)
Gain on disposition of property	0	0	29,261	27,170
Income (loss) before income taxes	21,337	11,575	69,500	41,816
Income tax benefit (expense)	(1,409)	(1,457)	(923)	(224)
Net income	19,928	10,118	68,577	41,592
Net (income) loss attributable to non-controlling interests:
Non-controlling interests in the Operating Partnership	(7,207)	(3,560)	(25,424)	(14,865)
Non-controlling interests in other partnerships	(111)	49	(69)	271
Private perpetual preferred unit distributions	(1,050)	(1,050)	(3,151)	(3,151)
Net income attributable to common stockholders	$ 11,560	$ 5,557	$ 39,933	$ 23,847
Total weighted average shares:
Basic (in shares)	161,851	162,165	160,799	166,354
Diluted (in shares)	266,073	267,121	265,269	270,966
Earnings per share attributable to common stockholders:
Basic (in USD per share)	$ 0.07	$ 0.03	$ 0.25	$ 0.14
Diluted (in USD per share)	0.07	0.03	0.25	0.14
Dividends per share (in USD per share)	$ 0.035	$ 0.035	$ 0.105	$ 0.105