Derivatives and Hedging Activities - Narrative (Details)	3 Months Ended			6 Months Ended
	Jun. 30, 2021 USD ($) derivative	Dec. 31, 2020 USD ($) derivative	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) derivative	Jun. 30, 2020 USD ($)
Derivative [Line Items]
Reclassification of previously unrealized losses on interest rate derivatives into net income	$ 98,000		$ 4,604,000	$ 196,000	$ 6,552,000
Gain to be reclassified in next twelve months	400,000			400,000
Cash Flow Hedging [Member]
Derivative [Line Items]
Amount of (loss) gain recognized in income on cash flow hedges	$ 0		(6,500,000)	$ 0	(85,000,000.0)
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Number of derivatives held | derivative	0	0		0
Notional amount	$ 900,000,000.0			$ 900,000,000.0
Termination of derivative contract		$ 900,000,000.0
Designated as Hedging Instrument [Member] | Forward Starting Interest Rate Swap [Member]
Derivative [Line Items]
Notional amount	400,000,000.0			400,000,000.0
Termination of derivative contract		$ 400,000,000.0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Reclassification of previously unrealized losses on interest rate derivatives into net income	$ 100,000		$ 4,600,000	$ 200,000	$ 6,600,000