Derivative Instruments - Realized and Unrealized Gain (Loss) on Derivatives Not Designated as Hedging Instruments (Details) - Not Designated as Hedging Instrument - Cross currency and interest rate swaps - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Derivative [Line Items]
Unrealized (loss) gain	$ (802)	$ (2,555)	$ 0	$ 4,021
Realized (loss) gain	(626)	5,187	(626)	3,794
(Loss) gain on derivatives, net	$ (1,428)	$ 2,632	$ (626)	$ 7,815