Accrued Expenses and Other Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020
Payables and Accruals [Abstract]
Prepaid tenant rent	$ 25,207	$ 20,780
Real estate taxes payable	19,528	15,380
Interest payable	10,873	9,147
Property operating expense payable	9,759	8,473
Deferred compensation	8,926	10,599
Accrued tenant improvements	7,187	30,011	$ 26,891
Other liabilities	28,099	20,044
Total	$ 109,579	$ 114,434