Revenue Recognition - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Adjustments necessary to record rent on straight line basis	$ (1,132)	$ 3,079
Straight line rent receivables	3,155		$ 3,073
TA
Related Party Transaction [Line Items]
Straight line rent receivable, due from related persons	57,738		$ 66,347
Deferred percentage rental income	$ 1,069	$ 835