SHORT-TERM AND LONG-TERM BORROWINGS - Long Term Debt (Details) - USD ($)	Sep. 30, 2022	Sep. 30, 2021
Debt Instrument [Line Items]
Trust preferred securities	$ 13,661,000	$ 13,661,000
Subordinated debentures, net of issuance costs	20,000,000	73,980,000
Other long-term borrowings	2,367,000	5,193,000
Long-term borrowings	36,028,000	92,834,000
Discounted leases	2,400,000	5,100,000
Finance lease obligations	$ 0	$ 100,000
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Total long-term borrowings	Total long-term borrowings
Maturities of Long-term Debt
2023	$ 603,000
2024	1,764,000
2025	0
2026	0
2027	0
Thereafter	33,661,000
Total long-term borrowings	36,028,000	$ 92,834,000
Trust preferred securities
Debt Instrument [Line Items]
Long-term borrowings	13,661,000
Maturities of Long-term Debt
2023	0
2024	0
2025	0
2026	0
2027	0
Thereafter	13,661,000
Total long-term borrowings	13,661,000
Subordinated debentures
Debt Instrument [Line Items]
Long-term borrowings	20,000,000
Maturities of Long-term Debt
2023	0
2024	0
2025	0
2026	0
2027	0
Thereafter	20,000,000
Total long-term borrowings	20,000,000
Other long-term borrowings
Debt Instrument [Line Items]
Long-term borrowings	2,367,000
Maturities of Long-term Debt
2023	603,000
2024	1,764,000
2025	0
2026	0
2027	0
Thereafter	0
Total long-term borrowings	$ 2,367,000

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