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Derivatives and Hedging Activities - Non-designated Hedges (Details) | 12 Months Ended
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Dec. 31, 2021 USD ($) loan derivative | Dec. 31, 2020 USD ($) loan derivative | Dec. 31, 2019 USD ($)
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Number Of Participation Loans Purchased | loan | 4 | 4 |
Participating mortgage loans, mortgage obligations amount | $ 27,200,000 | $ 27,700,000 |
Gain (Loss) on fair value hedges recognized in earnings | $ 312,000 | $ (264,000) | $ (104,000)
Interest Rate Contract | Not Designated as Hedging Instrument | Third Parties |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Number of interest rate derivatives held | derivative | 1 |  |
Notional amount of derivatives | $ 93,900,000 |  |
Interest Rate Contract | Not Designated as Hedging Instrument | Commercial customers |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Notional amount of derivatives | $ 93,900,000 |  |
Interest Rate Swap | Not Designated as Hedging Instrument |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Number of interest rate derivatives held | derivative | 11 |  |
Interest Rate Swap | Not Designated as Hedging Instrument | Third Parties |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Number of interest rate derivatives held | derivative |  | 19 |
Notional amount of derivatives |  | $ 142,800,000 |
Interest Rate Swap | Not Designated as Hedging Instrument | Commercial customers |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Number of interest rate derivatives held | derivative |  | 19 |
Notional amount of derivatives |  | $ 142,800,000 |
Interest Rate Cap | Not Designated as Hedging Instrument | Commercial customers |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Number of interest rate derivatives held | derivative | 1 |  |
Valley Bank | Interest Rate Swap | Not Designated as Hedging Instrument |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Number of interest rate derivatives held | derivative | 2 | 2 |
Notional amount of derivatives | $ 482,000 | $ 584,000 |

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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 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959 + Details
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- Definition Total amount of gain (loss) derived from fair value hedges recognized in earnings in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5624171-113959 + Details
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