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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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