Derivatives - Effect of Our Derivative Financial Instruments on Our Consolidated Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Amount of Gain or (Loss) Recognized in Other Comprehensive Income on Derivative Instruments	$ (2,300)	$ (10,500)	$ (22,400)	$ (15,800)
Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Interest Expense	2,300	(1,200)	2,600	(2,300)
Interest Expense	$ (17,182)	$ (15,554)	$ (34,040)	$ (31,452)