GOVERNMENT GUARANTEED LOAN SERVICING ACTIVITIES - Narrative (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2024	Dec. 31, 2023
Servicing Asset at Amortized Cost [Line Items]
Principal balance of government guaranteed loans, excluding PPP loans	$ 395,155	$ 395,877
Principal balance of government guaranteed loans, excluding PPP loans, guaranteed portion	155,345	181,459
Unpaid principal balances of government guaranteed loans serviced for others	$ 1,009,797	$ 855,756
Servicing assets, weighted average discount rate	13.75%	14.50%
Servicing assets, weighted average prepayment speed (as a percent)	13.16%	11.42%
Government guaranteed loan servicing rights \| Significant Unobservable Inputs (Level 3) \| Fair Value
Servicing Asset at Amortized Cost [Line Items]
Servicing asset rights at fair value	$ 18,596	$ 16,318

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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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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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