Segment Reporting - Segment Revenue and Profit or Loss Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Dec. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues:
Rental revenue				$ 559,690	$ 563,071	$ 586,414
Intercompany rental revenue				0	0	0
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
Intercompany rent expense				0	0	0
Ground rent expense				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
Assets	$ 4,282,447			4,282,447	4,150,695	3,931,834
Expenditures for segment assets				398,372	104,060	255,924
Intersegment Elimination
Revenues:
Rental revenue				0	0	0
Intercompany rental revenue				(23,413)	(17,827)	(82,469)
Observatory revenue				0	0	0
Lease termination fees				0	0	0
Third-party management and other fees				0	0	0
Other revenue and fees				0	0	0
Total revenues				(23,413)	(17,827)	(82,469)
Operating expenses:
Property operating expenses				0	0	0
Intercompany rent expense				(23,413)	(17,827)	(82,469)
Ground rent expense				0	0	0
General and administrative expenses				0	0	0
Observatory expenses				0	0	0
Real estate taxes				0	0	0
Impairment charges				0	0
Depreciation and amortization				0	0	0
Total operating expenses				(23,413)	(17,827)	(82,469)
Total operating income				0	0	0
Other income (expense):
Interest income				0	0	0
Interest expense				0	0	0
Loss on early extinguishment of debt				0	0
IPO litigation expense					0
Income (loss) before income taxes				0	0	0
Income tax benefit (expense)				0	0	0
Net income (loss)				0	0	0
Assets	0			0	0	0
Expenditures for segment assets				0	0	0
Real Estate
Operating expenses:
Impairment charges	7,700	$ 2,100	$ 4,100	7,700	6,200
Real Estate | Operating segments
Revenues:
Rental revenue				559,690	563,071	586,414
Intercompany rental revenue				23,413	17,827	82,469
Observatory revenue				0	0	0
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				5,343	6,459	10,554
Total revenues				605,895	597,998	685,043
Operating expenses:
Property operating expenses				126,986	136,141	174,977
Intercompany rent expense				0	0	0
Ground rent expense				9,326	9,326	9,326
General and administrative expenses				55,947	62,244	61,063
Observatory expenses				0	0	0
Real estate taxes				119,967	121,923	115,916
Impairment charges				7,723	6,204
Depreciation and amortization				201,676	190,863	181,558
Total operating expenses				521,625	526,701	542,840
Total operating income				84,270	71,297	142,203
Other income (expense):
Interest income				701	2,542	11,259
Interest expense				(94,292)	(89,907)	(79,246)
Loss on early extinguishment of debt				(214)	(86)
IPO litigation expense					(1,165)
Income (loss) before income taxes				(9,535)	(17,319)	74,216
Income tax benefit (expense)				(613)	(843)	(896)
Net income (loss)				(10,148)	(18,162)	73,320
Assets	4,037,122			4,037,122	3,903,884	3,671,211
Expenditures for segment assets				398,368	101,306	191,630
Observatory | Operating segments
Revenues:
Rental revenue				0	0	0
Intercompany rental revenue				0	0	0
Observatory revenue				41,474	29,057	128,769
Lease termination fees				0	0	0
Third-party management and other fees				0	0	0
Other revenue and fees				138	0	0
Total revenues				41,612	29,057	128,769
Operating expenses:
Property operating expenses				0	0	0
Intercompany rent expense				23,413	17,827	82,469
Ground rent expense				0	0	0
General and administrative expenses				0	0	0
Observatory expenses				23,206	23,723	33,767
Real estate taxes				0	0	0
Impairment charges				0	0
Depreciation and amortization				130	143	30
Total operating expenses				46,749	41,693	116,266
Total operating income				(5,137)	(12,636)	12,503
Other income (expense):
Interest income				3	95	0
Interest expense				(102)	0	0
Loss on early extinguishment of debt				0	0
IPO litigation expense					0
Income (loss) before income taxes				(5,236)	(12,541)	12,503
Income tax benefit (expense)				2,347	7,814	(1,533)
Net income (loss)				(2,889)	(4,727)	10,970
Assets	$ 245,325			245,325	246,811	260,623
Expenditures for segment assets				$ 4	$ 2,754	$ 64,294