Segments - Schedule of Reconciliation of NOI to Net (Loss) Income Attributable to Common Stockholders (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting [Abstract]
NOI	[1]	$ 120,710	$ 117,066	$ 360,294	$ 357,823
Fee income		5,132	6,561	23,094	19,432
Depreciation and amortization expense		(58,284)	(57,522)	(171,306)	(175,752)
General and administrative expenses		(13,150)	(13,257)	(45,501)	(46,039)
NOI from unconsolidated joint ventures (excluding One Steuart Lane)		(11,540)	(11,627)	(34,359)	(32,510)
(Loss) income from unconsolidated joint ventures		(5,797)	223	(15,326)	(20,810)
Interest and other income, net		1,580	138	2,607	2,510
Interest and debt expense		(36,949)	(36,266)	(106,804)	(105,919)
Other, net		195	189	244	101
Income (loss) before income taxes		1,897	5,505	12,943	(1,164)
Income tax expense		(673)	(873)	(1,559)	(2,448)
Net income (loss)		1,224	4,632	11,384	(3,612)
Consolidated joint ventures		(4,179)	(3,768)	(12,383)	(16,924)
Consolidated real estate fund		1,309	(3,123)	2,677	(3,179)
Operating Partnership		109	204	(204)	2,139
Net (loss) income attributable to common stockholders		$ (1,537)	$ (2,055)	$ 1,474	$ (21,576)

[1] NOI is used to measure the operating performance of our properties. NOI consists of rental revenue (which includes property rentals, tenant reimbursements and lease termination income) and certain other property-related revenue less operating expenses (which includes property-related expenses such as cleaning, security, repairs and maintenance, utilities, property administration and real estate taxes). We use NOI internally as a performance measure and believe it provides useful information to investors regarding our financial condition and results of operations because it reflects only those income and expense items that are incurred at the property level. Other real estate companies may use different methodologies for calculating NOI and, accordingly, our presentation of NOI may not be comparable to other real estate companies.