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INVESTMENT SECURITIES (Summary of Maturities of Debt Securities and Mortgage-backed Securities Available For Sale) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Sep. 30, 2018
Available for Sale Securities, Amortized Cost
Due within 1 year
Due after 1 but within 5 years	2,500
Due after 5 but within 10 years
Due after 10 years
Total debt securities	2,500
Mortgage Backed Securities, Residential	18,378
Mortgage Backed Securities, Commercial
Amortized Cost	20,878	$ 23,225
Available for Sale Securities, Fair Value
Due within 1 year
Due after 1 but within 5 years	2,494
Due after 5 but within 10 years
Due after 10 years
Total debt securities	2,494
Mortgage Backed Securities, Residential	18,447
Mortgage Backed Securities, Commercial
Fair Value	$ 20,941	$ 22,469

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- Definition

Amount of mortgage-backed commercial debt securities at cost, net of adjustments, which include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.

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