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	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized in Income on Derivative	$ 1,255	$ (2,289)
Amount of Gain/(Loss) Recognized in Income on Hedged Item	(1,255)	2,289
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized in Income on Derivative	1,255	(2,289)
Amount of Gain/(Loss) Recognized in Income on Hedged Item	$ (1,255)	$ 2,289