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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Total Loans Rated Special Mention or Lower (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	$ 8,681,967	$ 8,335,309
Total Criticized | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	182,293	187,906
Total Classified | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	126,542	119,779
Non-Accrual | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	26,991	31,114
Substandard Accruing | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	99,551	88,665
Special Mention | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	$ 55,751	$ 68,127

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+ References

No definition available.

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- Definition

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
-Paragraph 1
-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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