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Derivative Instruments and Hedge Activities - Additional Information (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Derivative [Line Items] |  |  |  |  |
Derivative notional amount | $ 866,486,000 |  | $ 866,486,000 |  | $ 391,847,000
Interest recorded | 349,000 | $ 465,000 | 1,333,000 | $ 2,838,000 |
Unrealized gain (loss) to be reclassified as an decrease to interest expense during the next twelve months | 868,000 |  | 868,000 |  |
Fair value of derivatives net liability position | 12,300,000 |  | 12,300,000 |  |
Collateral amount posted | 9,700,000 |  | 9,700,000 |  |
Offsetting derivative positions | 1,814,000 |  | 1,814,000 |  |
Interest Rate Swap |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Interest recorded | 29,000 | 22,000 | 71,000 | 64,000 |
Other Interest Rate Derivatives |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative notional amount | $ 458,698,000 |  | $ 458,698,000 |  |
Weighted average pay rates | 4.23% |  | 4.23% |  |
Derivative maturity date, start year |  |  | 2022-01 |  |
Derivative maturity date, end year |  |  | 2031-09 |  |
Derivative instruments transaction fees | $ 134,000 | $ 41,000 | $ 840,000 | $ 700,000 |
Other Credit Derivatives |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative notional amount | 7,800,000 |  | 7,800,000 |  | 8,400,000
Cash Flow Hedging |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative notional amount | $ 400,000,000 |  | $ 400,000,000 |  |
Weighted average pay rates | 0.98% |  | 0.98% |  |
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swap |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative notional amount | $ 400,000,000 |  | $ 400,000,000 |  | 0
Remaining balance in other comprehensive income | 253,000 |  | 253,000 |  | $ 304,000
Designated as Hedging Instrument | Cash Flow Hedging | Fixed Interest Rate Swaps Effective in March 2022 |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative notional amount | 100,000,000.0 |  | 100,000,000.0 |  |
Designated as Hedging Instrument | Cash Flow Hedging | Fixed Interest Rate Swaps Effective in September 2022 |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative notional amount | 50,000,000.0 |  | 50,000,000.0 |  |
Designated as Hedging Instrument | Cash Flow Hedging | Fixed Interest Rate Swaps Effective in March 2023 |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative notional amount | 200,000,000.0 |  | 200,000,000.0 |  |
Designated as Hedging Instrument | Cash Flow Hedging | Fixed Interest Rate Swaps Effective in May 2023 |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative notional amount | $ 50,000,000.0 |  | $ 50,000,000.0 |  |

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- Definition Derivative instruments transaction fees. + References No definition available. + Details
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- Definition Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e681-108580 + Details
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- Definition The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624258-113959 + Details
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- Definition Fair value of 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, not subject to a master netting arrangement, deducted from derivative liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226016-175313 + Details
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- Definition The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624258-113959 + Details
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