Summary of Significant Accounting Policies - Amortization of Deferred Expenses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Amortization of deferred charges	$ 12,027	$ 7,834	$ 22,698	$ 15,151
Lease intangibles (in-place)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Amortization of deferred charges	6,768	4,055	12,683	7,563
Lease intangibles (above-market)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Amortization of deferred charges	6,843	5,218	13,244	10,269
Lease intangibles (below-market)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Amortization of below market lease	$ (1,584)	$ (1,439)	$ (3,229)	$ (2,681)