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OTHER BORROWINGS (Textuals) (Details) - USD ($) | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Debt Instrument [Line Items] |  |
Funds Borrowed Against Current Borrowing Capacity | $ 182,877,000 | $ 232,799,000
Debt Securities Pledged as Collateral for Repurchase Transaction Accounts, Amortized Costs | 266,600,000 |
Repurchase Agreements [Member] | Retail repurchase agreements [Member] |  |
Debt Instrument [Line Items] |  |
Funds Borrowed Against Current Borrowing Capacity | $ 182,877,000 | 232,799,000
Repurchase Agreements [Member] | Retail repurchase agreements [Member] | Minimum [Member] |  |
Debt Instrument [Line Items] |  |
Repurchase agreements, interest rate | 0.05% |
Repurchase Agreements [Member] | Retail repurchase agreements [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Repurchase agreements, interest rate | 4.64% |
Federal Reserve Bank Advances [Member] | Federal Reserve Bank of San Francisco [Member] |  |
Debt Instrument [Line Items] |  |
Line of Credit Facility, Current Borrowing Capacity | $ 1,440,000,000 |
Funds Borrowed Against Current Borrowing Capacity | 0 | 0
Subsidiary, Banner Bank [Member] | Repurchase Agreements [Member] |  |
Debt Instrument [Line Items] |  |
Line of credit, current | 0 |
Subsidiary, Banner Bank [Member] | Federal Funds Purchased [Member] |  |
Debt Instrument [Line Items] |  |
Line of credit, current | $ 0 | $ 0

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- Definition The carrying value as of the balance sheet date of the current portion 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(13)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
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