Commitments and Contingencies - Additional Information (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2022 USD ($)
Loss Contingencies [Line Items]
Potential liability due to taxable sales of applicable properties	$ 22.3
Tenant building Expansion	$ 17.4
Minimum | Office Lease
Loss Contingencies [Line Items]
Non-cancellable operating leases, expiration year	2022
Minimum | Ground Lease
Loss Contingencies [Line Items]
Non-cancellable operating leases term	2034
Maximum | Office Lease
Loss Contingencies [Line Items]
Non-cancellable operating leases, expiration year	2023
Maximum | Ground Lease
Loss Contingencies [Line Items]
Non-cancellable operating leases term	2069