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- Definition

Number Of Unsecured Federal Funds

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No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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Contractual interest rate for funds borrowed, under the debt agreement.

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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.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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- Definition

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

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Amount of advance from Federal Home Loan Bank (FHLBank).

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Weighted average interest rate on advances made and reported by Federal Home Loan Bank (FHLBank).

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No definition available.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Maximum amount borrowed under the credit facility at any time during the period.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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The cash outflow from the repayment of long-term borrowing where a lender is placed in a lien position behind debt having a higher priority of repayment (senior) in case of liquidation of the entity's assets or underlying collateral.

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For the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, the maximum amount borrowed at any time during the period.

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FEDERAL HOME LOAN BANK ADVANCES AND OTHER BORROWINGS - Narrative (Details)		1 Months Ended		9 Months Ended	12 Months Ended	60 Months Ended
	Sep. 01, 2025 USD ($)	Sep. 30, 2025 USD ($)	Aug. 31, 2020	Sep. 30, 2025 USD ($) fund	Dec. 31, 2024 USD ($)	May 31, 2024	Aug. 30, 2020
Debt Instrument [Line Items]
Banks available and unused portion of borrowing agreement		$ 414,386,000		$ 414,386,000	$ 424,658,000
Maximum month-end amounts outstanding				5,000,000	81,000,000
Revolving Credit Facility \| Senior Notes - Variable Rate due June 2031
Debt Instrument [Line Items]
Maximum borrowing capacity		5,000,000		$ 5,000,000
Line of credit facility, renewal term				1 year
Advances from FHLB
Debt Instrument [Line Items]
Maximum borrowing capacity		24,784,000		$ 24,784,000	24,942,000
Long-term line of credit		32,596,000		32,596,000	33,994,000
Federal reserve borrowings outstanding				0	0
Unsecured Federal Funds Purchased
Debt Instrument [Line Items]
Long-term line of credit		70,000,000		$ 70,000,000	70,000,000
Number of unsecured federal funds \| fund				2
Unsecured Federal Funds Purchased \| Line of Credit
Debt Instrument [Line Items]
Outstanding balances of debt instrument		0		$ 0	0
Advances from FHLB
Debt Instrument [Line Items]
FHLB advances		$ 1,028,745,000		$ 1,028,745,000	$ 1,075,001,000
Weighted-average interest rate (as a percent)		0.00%		0.00%	1.45%
Advances from FHLB \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount		$ 198,700,000		$ 198,700,000	$ 209,750,000
Subordinated Notes \| Subordinated Notes due 2030
Debt Instrument [Line Items]
Stated interest rate (as a percent)							6.00%
Renewed, term (in years)			5 years
Stock redeemed or called during period, value	$ 15,000
Subordinated Notes \| Subordinated Notes due 2030 \| Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)		5.91%
Senior Notes \| Senior Notes due 2039 \| Minimum
Debt Instrument [Line Items]
Stated interest rate (as a percent)		6.50%		6.50%	6.75%	3.00%
Senior Notes \| Senior Notes due 2039 \| Prime Rate
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						0.75%