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+ References

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479344/326-20-45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-3B

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-5

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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Loan Summary (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Loans receivable, net
Loans	$ 9,450,066		$ 8,809,394
Allowance for credit losses	(64,945)	$ (63,284)	(61,059)	$ (60,363)	$ (55,542)	$ (49,869)
Loans, net of allowance for credit losses	9,385,121		8,748,335
Business lending
Loans receivable, net
Loans	3,914,935		3,645,665
Consumer mortgage
Loans receivable, net
Loans	3,196,764		3,012,475
Consumer indirect
Loans receivable, net
Loans	1,708,302		1,539,653
Consumer direct
Loans receivable, net
Loans	185,301		177,605
Home equity
Loans receivable, net
Loans	444,764		433,996
Commercial Portfolio Segment \| Business lending
Loans receivable, net
Loans	3,914,935		3,645,665
Allowance for credit losses	(26,044)	(25,291)	(23,297)	(23,931)	(23,241)	(22,995)
Residential Portfolio Segment \| Consumer mortgage
Loans receivable, net
Loans	3,196,764		3,012,475
Allowance for credit losses	(14,971)	(14,553)	(14,343)	(13,818)	(12,631)	(10,017)
Residential Portfolio Segment \| Home equity
Loans receivable, net
Loans	444,764		433,996
Allowance for credit losses	(1,594)	(1,600)	(1,594)	(1,581)	(1,470)	(1,814)
Consumer Portfolio Segment \| Consumer indirect
Loans receivable, net
Loans	1,708,302		1,539,653
Allowance for credit losses	(18,290)	(17,808)	(17,852)	(17,018)	(14,378)	(11,737)
Consumer Portfolio Segment \| Consumer direct
Loans receivable, net
Loans	185,301		177,605
Allowance for credit losses	$ (3,046)	$ (3,032)	$ (2,973)	$ (3,015)	$ (2,822)	$ (2,306)