LOAN SERVICING ACTIVITIES - Narrative (Details) - USD ($)	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
LOAN SERVICING ACTIVITIES
Bank held borrowers' escrow balances	$ 1,300,000	$ 2,900,000
Fair value of SRAs	$ 3,349,000	$ 3,900,000
Weighted average default rate	0.67	1.24
Principal balances outstanding	$ 10,566,831,000	$ 9,244,661,000
Real estate and C&I loans
LOAN SERVICING ACTIVITIES
Principal balances outstanding	$ 347,900,000	$ 471,900,000
Minimum
LOAN SERVICING ACTIVITIES
Discount rates	9.50%	7.80%
Prepayment speeds	6.70%	5.00%
Maximum
LOAN SERVICING ACTIVITIES
Discount rates	12.00%	12.00%
Prepayment speeds	16.00%	38.00%

Estimated weighted average default rate on financial assets regardless of when the transfer occurred.

No definition available.

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- Definition

Discount rate which is used to value residual cash flows generated by financial assets of a securitization, asset-backed financing arrangement, or similar transfer regardless of when the transfer occurred.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
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- Definition

Estimated rate of prepayment of principal on financial assets regardless of when the transfer occurred.

+ References

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-Publisher FASB
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- Definition

Carrying amount as of the balance sheet date of cash collateral held for borrowed securities, for which the cash is restricted as to withdrawal or usage.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
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-Subparagraph (SX 210.9-03.1)
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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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.

+ References

No definition available.

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