Deferred Leasing Costs and Other Intangibles - Schedule of Deferred Leasing Costs and Intangibles (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Deferred leasing costs
Carrying Amount	$ 37,642	$ 42,345
Accumulated Amortization	(15,035)	(13,637)
Net Carrying Amount	22,607	28,708
Deferred Leasing Costs and Intangible Assets
Carrying Amount	143,815	171,802
Accumulated Amortization	(57,934)	(59,040)
Net Carrying Amount	85,881	112,762
Intangible Liabilities - Below-market lease values
Carrying Amount	17,591	32,652
Accumulated Amortization	(9,148)	(10,503)
Net Carrying Amount	8,443	22,149
In-place lease values
Deferred Leasing Costs and Intangible Assets
Carrying Amount	94,440	115,139
Accumulated Amortization	(35,816)	(39,093)
Net Carrying Amount	58,624	76,046
Above-market lease values
Deferred Leasing Costs and Intangible Assets
Carrying Amount	11,733	14,318
Accumulated Amortization	(7,083)	(6,310)
Net Carrying Amount	$ 4,650	$ 8,008