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INVESTMENT SECURITIES (Summary of Amortized Cost and Fair Values of Securities Held to Maturity) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Sep. 30, 2020
Held to Maturity Securities, Amortized Cost
Due within 1 year
Due after 1 but within 5 years	6,500
Due after 5 but within 10 years	3,000
Due after 10 years
Total debt securities	9,500
Mortgage Backed Securities, Residential	22,236
Mortgage Backed Securities, Commercial	757
Amortized cost	32,493	$ 30,443
Held to Maturity Securities, Fair Value
Due within 1 year
Due after 1 but within 5 years	6,500
Due after 5 but within 10 years	2,804
Due after 10 years
Total debt securities	9,304
Mortgage Backed Securities, Residential	22,832
Mortgage Backed Securities, Commercial	757
Fair value	$ 32,893	$ 30,899

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