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GOODWILL, OTHER INTANGIBLE ASSETS AND MORTGAGE SERVICING RIGHTS (Mortgage Servicing Rights) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Serviced Loans
Servicing Assets at Amortized Value [Line Items]
Loans serviced for others	$ 2,770,000
Mortgage Servicing Rights
Servicing Assets at Amortized Value [Line Items]
Custodial accounts	11,200	$ 3,200
Servicing Asset at Amortized Value, Balance [Roll Forward]
Balance, beginning of the year	17,206	15,223	$ 14,148
Additions—amounts capitalized	3,200	7,260	8,572
Servicing Asset at Amortized Cost, Additions	285	159	175
Amortization	(4,216)	(6,580)	(7,672)
Valuation adjustments in the period	309	(1,144)	0
Balance, end of the year	$ 16,166	$ 17,206	$ 15,223

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Noninterest-bearing Domestic Deposit, Custodial Accounts

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- Definition

Amortized amount of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 4
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Amount of additions from purchases, assumption or transfer to contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of amortization of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

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Amount of increase (decrease) in the amortized amount from a decrease (increase) in the valuation allowance applied to the servicing asset for a contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

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