Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues:
Rental revenue	$ 591,048	$ 559,690	$ 563,071
Observatory revenue	105,978	41,474	29,057
Lease termination fees	20,032	16,230	9,416
Third-party management and other fees	1,361	1,219	1,225
Other revenue and fees	8,622	5,481	6,459
Total revenues	727,041	624,094	609,228
Operating expenses:
Property operating expenses	157,935	126,986	136,141
Ground rent expenses	9,326	9,326	9,326
General and administrative expenses	61,765	55,947	62,244
Observatory expenses	31,036	23,206	23,723
Real estate taxes	123,057	119,967	121,923
Impairment charges	0	7,723	6,204
Depreciation and amortization	216,894	201,806	191,006
Total operating expenses	600,013	544,961	550,567
Total operating income (loss)	127,028	79,133	58,661
Other income (expense):
Interest income	4,948	704	2,637
Interest expense	(101,206)	(94,394)	(89,907)
Gain on sale/disposition of properties	33,988	0	0
Loss on early extinguishment of debt	0	(214)	(86)
IPO litigation expense	0	0	(1,165)
Income (loss) before income taxes	64,758	(14,771)	(29,860)
Income tax (expense) benefit	(1,546)	1,734	6,971
Net income (loss)	63,212	(13,037)	(22,889)
Private perpetual preferred unit distributions	(4,201)	(4,201)	(4,197)
Net (income) loss attributable to non-controlling interests:
Non-controlling interests in the Operating Partnership	(22,812)	6,527	10,374
Non-controlling interests in other partnerships	243	0	0
Net income (loss) attributable to common stockholders	$ 36,442	$ (10,711)	$ (16,712)
Total weighted average shares:
Basic (in shares)	165,039	172,445	175,169
Diluted (in shares)	269,948	277,420	283,837
Earnings (loss) per share attributable to common stockholders:
Basic (in USD per share)	$ 0.22	$ (0.06)	$ (0.10)
Diluted (in USD per share)	$ 0.22	$ (0.06)	$ (0.10)