Derivative and Other Fair Value Instruments - Summary of Effect of Fair Value Hedges on the Accompanying Consolidated Statements of Operations and Comprehensive Income (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized in Income on Derivative	$ 2,253	$ (2,151)
Amount of Gain/(Loss) Recognized in Income on Hedged Item	(2,253)	2,151
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized in Income on Derivative	2,253	(2,151)
Amount of Gain/(Loss) Recognized in Income on Hedged Item	$ (2,253)	$ 2,151