Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues:
Rental revenue	$ 559,690	$ 563,071	$ 586,414
Observatory revenue	41,474	29,057	128,769
Lease termination fees	16,230	9,416	4,352
Third-party management and other fees	1,219	1,225	1,254
Other revenue and fees	5,481	6,459	10,554
Total revenues	624,094	609,228	731,343
Operating expenses:
Property operating expenses	126,986	136,141	174,977
Ground rent expenses	9,326	9,326	9,326
General and administrative expenses	55,947	62,244	61,063
Observatory expenses	23,206	23,723	33,767
Real estate taxes	119,967	121,923	115,916
Impairment charges	7,723	6,204	0
Depreciation and amortization	201,806	191,006	181,588
Total operating expenses	544,961	550,567	576,637
Total operating income	79,133	58,661	154,706
Other income (expense):
Interest income	704	2,637	11,259
Interest expense	(94,394)	(89,907)	(79,246)
Loss on early extinguishment of debt	(214)	(86)	0
IPO litigation expense	0	(1,165)	0
Income (loss) before income taxes	(14,771)	(29,860)	86,719
Income tax benefit (expense)	1,734	6,971	(2,429)
Net income (loss)	(13,037)	(22,889)	84,290
Private perpetual preferred unit distributions	(4,201)	(4,197)	(1,743)
Net (income) loss attributable to non-controlling interests	6,527	10,374	(33,102)
Net income (loss) attributable to common stockholders	$ (10,711)	$ (16,712)	$ 49,445
Total weighted average shares:
Basic (in shares)	172,445	175,169	178,340
Diluted (in shares)	277,420	283,837	297,798
Earnings (loss) per share attributable to common stockholders:
Basic (in USD per share)	$ (0.06)	$ (0.10)	$ 0.28
Diluted (in USD per share)	$ (0.06)	$ (0.10)	$ 0.28