Derivative Instruments and Hedging Activities - Narrative (Details)	6 Months Ended
	Jun. 30, 2021 USD ($) swap	Dec. 31, 2020 USD ($)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative liability held as collateral	$ 82,500,000	$ 124,800,000
Fair value of net derivatives	$ 78,900,000	$ 113,200,000
Interest rate swaps | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Number of interest rate swap agreements entered into | swap	3
Notional Amount	$ 150,000,000
Estimated reclassification as increase to interest income	$ 679,000