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v3.23.2

Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk - Fair Value of Derivatives (Details) | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2023 USD ($) item | Dec. 31, 2022 USD ($) item | Mar. 31, 2023 USD ($)
Two financial institutions |  |  |
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions |  |  |
Cash collateral pledged with financial institutions, dollars | $ 10,400,000 | $ 11,200,000 |
Number of financial institutions in which cash collateral pledged | item |  | 2 |
Interest Rate Swap [Member] |  |  |
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions |  |  |
Cash collateral pledged with financial institutions, dollars | $ 5,700,000 | $ 5,300,000 |
Investment securities pledged with financial institutions, dollars |  | $ 0 | $ 0
Number of financial institutions in which cash collateral pledged | item | 1 | 1 |
Designated as Hedging Instrument |  |  |
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions |  |  |
Derivative assets designated as hedging instruments, fair value | $ 2,623,000 | $ 2,737,000 |
Derivative liabilities designated as hedging instruments, fair value | 9,911,000 | 8,610,000 |
Designated as Hedging Instrument | Interest Rate Products | Cash flow hedges of certain variable rate commercial and commercial real estate loan pools |  |  |
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions |  |  |
Notional amount | 300,000,000.0 | 250,000,000.0 |
Designated as Hedging Instrument | Interest Rate Products | Cash flow hedge of junior subordinated debentures and was executed to pay fixed and receive variable rate cash flows |  |  |
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions |  |  |
Notional amount | $ 25,800,000 | $ 25,800,000 |
Designated as Hedging Instrument | Interest Rate Products | OSBC Affiliates |  |  |
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions |  |  |
Derivative, number of transactions | item | 5 | 4 |
Notional amount | $ 325,774,000 | $ 275,774,000 |
Derivative assets designated as hedging instruments, fair value | 2,623,000 |  |
Derivative liabilities designated as hedging instruments, fair value | 9,911,000 | 8,610,000 |
Designated as Hedging Instrument | Interest Rate Swap [Member] | OSBC Affiliates |  |  |
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions |  |  |
Derivative assets designated as hedging instruments, fair value |  | 2,737,000 |
Not Designated as Hedging Instrument |  |  |
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions |  |  |
Derivative assets designated as hedging instruments, fair value | 4,014,000 |  |
Derivative liabilities designated as hedging instruments, fair value | 3,829,000 |  |
Not Designated as Hedging Instrument | Interest Rate Products |  |  |
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions |  |  |
Notional amount | $ 106,400,000 | $ 110,600,000 |
Not Designated as Hedging Instrument | Interest Rate Products | Commercial Loan Customers |  |  |
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions |  |  |
Derivative, number of transactions | item | 18 | 21 |
Notional amount | $ 106,379,000 | $ 110,647,000 |
Derivative assets designated as hedging instruments, fair value | 3,829,000 | 3,654,000 |
Derivative liabilities designated as hedging instruments, fair value | 3,829,000 | 3,654,000 |
Not Designated as Hedging Instrument | Commitments. |  |  |
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions |  |  |
Notional amount | $ 10,000,000.0 | $ 5,300,000 |
Not Designated as Hedging Instrument | Interest Rate Lock Commitments and Forward Contracts. |  |  |
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions |  |  |
Derivative, number of transactions | item | 40 | 4 |
Notional amount | $ 10,029,000 | $ 43,699,000 |
Derivative assets designated as hedging instruments, fair value | $ 77,000 | 125,000 |
Derivative liabilities designated as hedging instruments, fair value |  | $ 1,000 |
Not Designated as Hedging Instrument | Interest Rate Lock Commitments and Forward Contracts. | Commercial Loan Customers |  |  |
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions |  |  |
Derivative, number of transactions | item |  | 28 |
Notional amount |  | $ 5,298,000 |
Derivative assets designated as hedging instruments, fair value |  | 76,000 |
Not Designated as Hedging Instrument | Other Contracts |  |  |
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions |  |  |
Derivative, number of transactions | item | 4 |  |
Notional amount | $ 43,994,000 |  |
Derivative assets designated as hedging instruments, fair value | 108,000 | 3,855,000 |
Derivative liabilities designated as hedging instruments, fair value |  | $ 3,655,000 |
Interest Income |  |  |
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions |  |  |
Amount to be reclassified as an decrease to interest expense during the next twelve months | 6,800,000 |  |
Interest Expense |  |  |
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions |  |  |
Amount to be reclassified as an decrease to interest expense during the next twelve months | $ 688,000 |  |

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