Derivative and Other Fair Value Instruments - Summary of Effect of Cash Flow Hedges on the Accompanying Consolidated Statements of Operations and Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Effective Portion - Amount of Gain/(Loss) Recognized in OCI on Derivative	$ (1,190)	$ (33,765)	$ 5,124
Effective Portion - Amount of Gain/(Loss) Reclassified from Accumulated OCI into Income	(35,087)	(21,188)	(18,452)
Ineffective Portion - Amount of Gain/ (Loss) Reclassified from Accumulated OCI into Income			0
Forward Starting Swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Effective Portion - Amount of Gain/(Loss) Recognized in OCI on Derivative	(1,190)	(33,765)	5,124
Effective Portion - Amount of Gain/(Loss) Reclassified from Accumulated OCI into Income	$ (35,087)	$ (21,188)	(18,452)
Ineffective Portion - Amount of Gain/ (Loss) Reclassified from Accumulated OCI into Income			$ 0