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LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES - Schedule of Total Loans Rated Special Mention or Lower (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Allowance for loan losses
Financing receivable, before allowance for credit loss	$ 8,335,309	$ 6,825,847
Total Criticized | Performing
Allowance for loan losses
Financing receivable, before allowance for credit loss	187,906	241,957
Total Classified | Performing
Allowance for loan losses
Financing receivable, before allowance for credit loss	119,779	141,886
Non-Accrual | Performing
Allowance for loan losses
Financing receivable, before allowance for credit loss	31,114	35,326
Substandard Accruing | Performing
Allowance for loan losses
Financing receivable, before allowance for credit loss	88,665	106,560
Special Mention | Performing
Allowance for loan losses
Financing receivable, before allowance for credit loss	$ 68,127	$ 100,071

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Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
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-URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 3B
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL120267963-210447

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