Acquisitions - Estimated Fair Values of Assets and Liabilities Assumed (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Assets
Land and improvements	$ 150,561
Buildings and improvements	30,932
Deferred leasing costs and acquisition-related intangible assets	12,063
Right of use ground lease asset	13,334
Total assets acquired	206,890
Liabilities
Acquisition-related intangible liabilities	9,950
Ground lease liability	10,940
Total liabilities assumed	20,890
Net assets and liabilities acquired	$ 186,000
Discount rate	4.79%
Below-market leases acquired	$ 10,000
Weighted average amortization period of below-market leases	3 years 6 months
In-place leases [Member]
Assets
Deferred leasing costs and acquisition-related intangible assets	$ 9,200
Liabilities
Weighted average amortization period of above-market leases in years	3 years 3 months 18 days
Deferred leasing costs [Member]
Assets
Deferred leasing costs and acquisition-related intangible assets	$ 2,900
Liabilities
Weighted average amortization period of above-market leases in years	3 years 6 months