Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues:
Rental revenue	$ 597,319	$ 591,048	$ 559,690
Observatory revenue	129,366	105,978	41,474
Lease termination fees	0	20,032	16,230
Third-party management and other fees	1,351	1,361	1,219
Other revenue and fees	11,536	8,622	5,481
Total revenues	739,572	727,041	624,094
Operating expenses:
Property operating expenses	167,324	157,935	126,986
Ground rent expenses	9,326	9,326	9,326
General and administrative expenses	63,939	61,765	55,947
Observatory expenses	35,265	31,036	23,206
Real estate taxes	127,101	123,057	119,967
Impairment charges	0	0	7,723
Depreciation and amortization	189,911	216,894	201,806
Total operating expenses	592,866	600,013	544,961
Total operating income (loss)	146,706	127,028	79,133
Other income (expense):
Interest income	15,136	4,948	704
Interest expense	(101,484)	(101,206)	(94,394)
Gain on sale/disposition of properties	26,764	33,988	0
Loss on early extinguishment of debt	0	0	(214)
Income (loss) before income taxes	87,122	64,758	(14,771)
Income tax (expense) benefit	(2,715)	(1,546)	1,734
Net income (loss)	84,407	63,212	(13,037)
Private perpetual preferred unit distributions	(4,201)	(4,201)	(4,201)
Net (income) loss attributable to non-controlling interests:
Non-controlling interests in the Operating Partnership	(31,094)	(22,812)	6,527
Non-controlling interests in other partnerships	(68)	243	0
Net income (loss) attributable to common stockholders	$ 49,044	$ 36,442	$ (10,711)
Total weighted average shares:
Basic (in shares)	161,122	165,039	172,445
Diluted (in shares)	265,633	269,948	277,420
Earnings (loss) per share attributable to common stockholders:
Basic (in USD per share)	$ 0.30	$ 0.22	$ (0.06)
Diluted (in USD per share)	$ 0.30	$ 0.22	$ (0.06)