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MORTGAGE BANKING ACTIVITIES - OTHER INFORMATION RELATING TO MSRS (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
MORTGAGE BANKING ACTIVITIES
Fair value of mortgage servicing rights portfolio	$ 17,300	$ 17,145
Monthly weighted average prepayment rate of unpaid principal balance (as percent)	120.00%	127.00%
Discount rate (as percent)	10.39%	10.21%
Weighted average foreclosure rate	0.11%	0.10%
Weighted average life in years	7 years 8 months 8 days	7 years 6 months 14 days

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Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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Discount rate used to estimate the fair value of servicing assets and servicing liabilities.

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Percentage of contractually collectible principal associated with a financial asset expected not to be collected due to default by the borrower.

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Estimated rate of prepayments of principal on servicing assets and servicing liabilities.

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Weighted average life of financial assets and financial liabilities, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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