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FAIR VALUE DISCLOSURES - Additional Information (Details) |  | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
May 07, 2024 shares | Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) prepaymentSpeed | Jun. 30, 2023 USD ($) | Dec. 31, 2023 prepaymentSpeed
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Percentage of discount from appraised value (in hundredths) |  |  |  | 3.60% |  |
Mortgage servicing rights |  | $ 2,000,000.0 |  | $ 2,000,000.0 |  |
Weighted average maturity of residential mortgages |  |  |  | 20 years |  |
Qualitative information used to estimate fair value | prepaymentSpeed |  |  |  | 156 |  | 148
Discount rate used to estimate fair value |  |  |  |  |  | 10.50%
Equity securities, realized net gain |  | 9,011,000 | $ 0 | $ 9,011,000 | $ 0 |
Visa Investment |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Equity securities, realized net gain |  | 9,000,000 |  |  |  |
Visa Class B-1 common stock |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Equity securities, tendered (in shares) | shares | 23,804 |  |  |  |  |
Visa Class B-2 common stock |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Equity securities, realized net gain |  | 3,900,000 |  |  |  |
Visa Class C common stock |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Equity securities, realized net gain |  | $ 3,400,000 |  |  |  |
Equity securities, percentage liquidated |  | 66.67% |  |  |  |
Visa Class C common stock, still held |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Equity securities, realized net gain |  | $ 1,700,000 |  |  |  |
Minimum |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Amount of variance |  |  |  | $ 100,000 |  |
Discount rate used to estimate fair value |  |  |  | 10.00% |  |
Minimum | Commercial Real Estates | Level 3 |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Percentage of discount from appraised value (in hundredths) |  |  |  | 30.00% |  |
Minimum | Inventory Finished Goods | Level 3 |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Percentage of discount from appraised value (in hundredths) |  |  |  | 40.00% |  |
Minimum | Finished Goods | Level 3 |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Percentage of discount from appraised value (in hundredths) |  |  |  | 40.00% |  |
Minimum | Inventory Work In Process | Level 3 |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Percentage of discount from appraised value (in hundredths) |  |  |  | 60.00% |  |
Minimum | Equipment | Level 3 |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Percentage of discount from appraised value (in hundredths) |  |  |  | 20.00% |  |
Minimum | Marketable Securities | Level 3 |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Percentage of discount from appraised value (in hundredths) |  |  |  | 10.00% |  |
Maximum |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Discount rate used to estimate fair value |  |  |  | 12.00% |  |
Maximum | Commercial Real Estates | Level 3 |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Percentage of discount from appraised value (in hundredths) |  |  |  | 50.00% |  |
Maximum | Inventory Finished Goods | Level 3 |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Percentage of discount from appraised value (in hundredths) |  |  |  | 60.00% |  |
Maximum | Finished Goods | Level 3 |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Percentage of discount from appraised value (in hundredths) |  |  |  | 60.00% |  |
Maximum | Inventory Work In Process | Level 3 |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Percentage of discount from appraised value (in hundredths) |  |  |  | 100.00% |  |
Maximum | Equipment | Level 3 |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Percentage of discount from appraised value (in hundredths) |  |  |  | 50.00% |  |
Maximum | Marketable Securities | Level 3 |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Percentage of discount from appraised value (in hundredths) |  |  |  | 30.00% |  |
Municipal Notes | Minimum |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Percentage of variance |  |  |  | (5.00%) |  |
Municipal Notes | Maximum |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Percentage of variance |  |  |  | 5.00% |  |
US Government Agencies Short-term Debt Securities | Minimum |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Percentage of variance |  |  |  | (3.00%) |  |
US Government Agencies Short-term Debt Securities | Maximum |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Percentage of variance |  |  |  | 3.00% |  |
U.S. Treasury securities | Minimum |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Percentage of variance |  |  |  | (1.00%) |  |
U.S. Treasury securities | Maximum |  |  |  |  |  |
Assets Pledged As Collateral For Loans Receivable [Line Items] |  |  |  |  |  |
Percentage of variance |  |  |  | 1.00% |  |

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