INVESTMENT SECURITIES (Summary of Amortized Cost and Fair Values of Securities Held to Maturity) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Sep. 30, 2017
Held to Maturity Securities, Amortized Cost
Due within 1 year
Due after 1 but within 5 years	1,499
Due after 5 but within 10 years	3,000
Due after 10 years	965
Total debt securities	5,464
Mortgage Backed Securities, Residential	27,958
Mortgage Backed Securities, Commercial	920
Amortized cost	34,342	$ 51,368
Held to Maturity Securities, Fair Value
Due within 1 year
Due after 1 but within 5 years	1,460
Due after 5 but within 10 years	2,577
Due after 10 years	896
Total debt securities	4,933
Mortgage Backed Securities, Residential	27,062
Mortgage Backed Securities, Commercial	910
Fair value	$ 32,905	$ 51,241