Derivative Instruments and Hedging Activities - Schedule of Effect of Cash Flow Hedge Accounting on Accumulated OCI (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Derivative Instruments Gain Loss [Line Items]
Total other comprehensive (income) loss, gross of tax	$ 1,425	$ (1,145)	$ 4,227	$ (20,974)
Interest Rate Swap Agreements
Derivative Instruments Gain Loss [Line Items]
Total other comprehensive (income) loss, gross of tax	(1,913)	1,538	(5,676)	28,169
Interest Rate Swap Agreements | Derivatives Designated as Effective Hedging Instruments | Cash Flow Hedges
Derivative Instruments Gain Loss [Line Items]
Loss (gain) related to effective portion of derivatives recognized in accumulated OCI, gross of tax effect	323	5,020	(1,089)	32,772
Interest Rate Swap Agreements | Interest Expense | Derivatives Designated as Effective Hedging Instruments | Cash Flow Hedges
Derivative Instruments Gain Loss [Line Items]
Loss related to effective portion of derivatives reclassified from accumulated OCI to interest expense, gross of tax effect	(2,091)	$ (3,482)	(4,137)	$ (4,603)
Interest Rate Swap Agreements | Interest Expense | Derivatives Not Designated as Hedging Instruments
Derivative Instruments Gain Loss [Line Items]
Previously deferred loss on interest rate swap agreements reclassified from accumulated OCI to interest expense, gross of tax effect	$ (145)		$ (450)