SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Nov. 16, 2021	Sep. 30, 2021	Sep. 30, 2020
FHLB stock par value		$ 100
Revenue from contracts with customers included in service charges		1,100	$ 901
Revenue from contracts with customers included in other operating income		110	106
Fees for other customer services		777
Subsequent Event [Member]
Dividend payable, declaration date	Nov. 16, 2021
Dividend payable per common share	$ 0.12
Dividend payable, date to be paid	Dec. 14, 2021
Dividend payable, record date	Nov. 30, 2021
Small Business Relief Grant Program [Member]
Fees for other customer services		$ 777