Deferred Revenue, Intangibles, Net and Other Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Liabilities Disclosure [Abstract]
Unamortized in-place lease liabilities	$ 69,501	$ 83,117
Retainages payable and other	2,489	3,954
Tenant rents received in advance	11,642	9,493
Total	83,632	96,564
Amortization of Below Market Lease	$ 8,900	$ 7,700	$ 13,500