Leases (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Leases [Abstract]
Straight line rental income	$ 804	$ 1,153
Straight line rental income, excluding properties held-for-sale	105,279		$ 104,803
Variable lease, payment	18,228	20,028
Reimbursement revenue lease	18,180	$ 19,983
Deferred rents	878		1,486
Operating lease, right-of-use asset	$ 4,216		$ 4,237
Operating Lease, Right-of-Use Asset, Statement of Financial Position	Other assets, net		Other assets, net
Operating lease, liability	$ 4,395		$ 4,410
Operating Lease, Liability, Statement of Financial Position	Other liabilities		Other liabilities