Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Schedule of Identified Intangible Assets and Intangible Liabilities

The following summarizes our identified intangible assets (acquired above-market leases and in-place leases) and intangible liabilities (acquired below-market leases) as of March 31, 2024 and December 31, 2023 (in thousands):

	March 31, 2024		December 31, 2023
Identified intangible assets (included in other assets):
Gross amount	$	273,010	$	189,680
Accumulated amortization	(185,470)		(184,902)
Net	$	87,540	$	4,778
Identified intangible liabilities (included in deferred revenue):
Gross amount	$	226,034	$	205,394
Accumulated amortization	(202,178)		(202,089)
Net	$	23,856	$	3,305

Schedule of Marketable Securities

As of March 31, 2024 and December 31, 2023, we held the following marketable securities (in thousands):

	March 31, 2024		December 31, 2023
Commercial mortgage-backed securities	$	10,673	$	9,591
Total investment in marketable securities	$	10,673	$	9,591

Schedule of Properties Contributed of Annualized Cash Rent

For the three months ended March 31, 2024, the following properties contributed more than 5.0% of our annualized cash rent from office properties, including our share of annualized cash rent from joint venture office properties:

Property	Three months ended March 31, 2024
One Vanderbilt Avenue	16.7%
11 Madison Avenue	8.8%
420 Lexington Ave	7.2%
1515 Broadway	6.7%
1185 Avenue of the Americas	6.0%
245 Park Avenue	5.6%
280 Park Avenue	5.0%