Commitments and Contingencies (Details) ft² in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($) ft² jointVenture	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) ft² jointVenture	Jun. 30, 2020 USD ($)
Loss Contingencies [Line Items]
Number of unrecorded tenant allowance commitments | jointVenture	1		1
Unrecorded tenant allowance commitment	$ 28,100,000		$ 28,100,000
Unrecorded tenant allowance renewal term			20 years
Unrecorded tenant allowance expansion area (in sq. ft) | ft²	520		520
Collectibility of Tenant Reimbursements
Loss Contingencies [Line Items]
Reductions in reimbursement revenues	$ 0	$ 0	$ 0	$ 0