Derivatives and Hedging Activities - Agreements with Derivative Counterparties (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Balance Sheet Hedge
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Counterparties Collateral	$ 1,500,000
Loan Level Swap
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Counterparties Collateral	1,400,000	$ 5,300,000
Net Liability Position | Balance Sheet Hedge
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Termination Value of Derivatives With Derivative Dealer Counterparties		$ 391,000
Net Asset Position | Balance Sheet Hedge
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Termination Value of Derivatives With Derivative Dealer Counterparties	$ 375,000