Derivative Financial Instruments - Impact of Derivatives on Consolidated Statement of Changes in Stockholders' Equity (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 loss recognized in other comprehensive income (loss)	$ (6,562)	$ (22,824)	$ (53,784)	$ (35,645)
Less: amount of gain (loss) reclassified in interest expense	(4,219)	1,189	(5,747)	2,485
Total change in other comprehensive income (loss) for unrealized gains (losses) on derivatives, before income tax (expense) benefit	$ (2,343)	$ (24,013)	$ (48,037)	$ (38,130)