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LOANS, ALLOWANCE FOR LOAN LOSSES, AND CREDIT QUALITY - Breakdown of loans by risk rating (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Sep. 30, 2022
Loans
Gross loans	$ 2,893,978	$ 2,858,852
Commercial/Industrial
Loans
Gross loans	492,450	486,839
Commercial Real Estate - Owner Occupied
Loans
Gross loans	716,963	723,964
Commercial real estate - non-owner occupied
Loans
Gross loans	681,620	668,505
Construction and development
Loans
Gross loans	199,708	209,619
Residential 1-4 Family
Loans
Gross loans	739,514	706,794
Consumer
Loans
Gross loans	44,963	43,953
Other
Loans
Gross loans	18,760	$ 19,178
Risk Rating, Pass (1-5)
Loans
Gross loans	2,816,323
Risk Rating, Pass (1-5) | Commercial/Industrial
Loans
Gross loans	474,586
Risk Rating, Pass (1-5) | Commercial Real Estate - Owner Occupied
Loans
Gross loans	665,986
Risk Rating, Pass (1-5) | Commercial real estate - non-owner occupied
Loans
Gross loans	677,303
Risk Rating, Pass (1-5) | Construction and development
Loans
Gross loans	198,581
Risk Rating, Pass (1-5) | Residential 1-4 Family
Loans
Gross loans	736,146
Risk Rating, Pass (1-5) | Consumer
Loans
Gross loans	44,961
Risk Rating, Pass (1-5) | Other
Loans
Gross loans	18,760
Risk Rating, 6
Loans
Gross loans	11,890
Risk Rating, 6 | Commercial/Industrial
Loans
Gross loans	3,708
Risk Rating, 6 | Commercial Real Estate - Owner Occupied
Loans
Gross loans	8,031
Risk Rating, 6 | Residential 1-4 Family
Loans
Gross loans	151
Risk Rating, 7
Loans
Gross loans	65,765
Risk Rating, 7 | Commercial/Industrial
Loans
Gross loans	14,156
Risk Rating, 7 | Commercial Real Estate - Owner Occupied
Loans
Gross loans	42,946
Risk Rating, 7 | Commercial real estate - non-owner occupied
Loans
Gross loans	4,317
Risk Rating, 7 | Construction and development
Loans
Gross loans	1,127
Risk Rating, 7 | Residential 1-4 Family
Loans
Gross loans	3,217
Risk Rating, 7 | Consumer
Loans
Gross loans	$ 2

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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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481990/310-10-45-2

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