STOCK-BASED COMPENSATION AND STOCK REPURCHASE PROGRAM (Narrative) (Details) - USD ($)	9 Months Ended		128 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Treasury stock, shares	102,996		102,996	102,996
Cost of shares repurchased by ESOP trust	$ 2,300,000
Average cost of shares repurchased (per share)	$ 10.58
Description of loan with respect to employee stock ownership plan	The ESOP trust purchased 217,863 shares of common stock in the open market using proceeds of a loan from the Company. The total cost of shares purchased by the ESOP trust was $2.3 million, reflecting an average cost per share of $10.58. The Bank will make cash contributions to the ESOP on an annual basis sufficient to enable the ESOP to make the required loan payments to the Company. The loan bears a variable interest rate that adjusts annually every January 1st to the then published Prime Rate (4.50% at January 1, 2018) with principal and interest payable annually in equal installments over thirty years. The loan is secured by shares of the Company’s stock.
Interest rate of loan with respect to employee stock ownership plan	4.50%		4.50%
Shares allocated	165,771		165,771
Suspense shares	52,092		52,092
Fair value of unallocated shares	$ 670,945		$ 670,945
ESOP compensation expense	$ 118,000	$ 116,000
Total ESOP shares	217,863		217,863
Second Repurchase Program [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum stock repurchase authorization (as a percent)			5.00%
Stock authorized to be repurchased (in shares)	129,924		129,924
Stock repurchased during period (in shares)			81,000
Remaining shares available to be repurchased	48,924		48,924
Common stock average cost (in dollars per share)			$ 8.33
Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	5 years
Expiration period	10 years