Lessee Accounting (Details) $ in Thousands	Jun. 30, 2021 USD ($) landParcel	Dec. 31, 2020 USD ($)
Leases [Abstract]
Number of Properties Subject to Ground Leases | landParcel	2
Operating Lease, Right-of-Use Asset	$ 37,216	$ 38,867
Operating Lease, Liability	41,472	42,874
Finance Lease, Right-of-Use Asset, after Accumulated Amortization	37,889	19,239
Finance Lease, Liability	$ 38,512	$ 19,430