Derivative Instruments and Hedge Activities - Summary of Cash Flow Hedges (Details) - USD ($)	3 Months Ended
Mar. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Notional Amount	$ 739,390,000	$ 391,847,000
Derivative assets fair value	16,949,000	17,149,000
Derivative liabilities fair value	12,380,000	$ 18,133,000
Cash Flow Hedges
Derivative [Line Items]
Notional Amount	350,000,000
Derivative assets fair value	$ 4,992,000
Weighted average pay rates	0.93%
Weighted average maturity	5 years 7 months 6 days

Derivative weighted average pay rate.

No definition available.

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- Definition

Average remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Definition

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

+ References

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- Definition

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
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