Other Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Other Liabilities Disclosure [Abstract]
Ground lease liability	$ 58,547	$ 58,619
Prepaid rent	32,801	30,479
Security deposits	12,806	13,098
Restricted stock unit liability	6,683	10,613
Other liabilities	4,763	5,294
Total other liabilities	$ 115,600	$ 118,103