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LOANS RECEIVABLE, NET AND RELATED ALLOWANCE FOR LOAN LOSSES (Narrative) (Details) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Dec. 27, 2020 USD ($)	Mar. 31, 2021 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2021 USD ($) Loans	Mar. 31, 2020 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment		$ 12,855	$ 10,276	$ 13,290	$ 10,302
Troubled Debt Restructurings Loans		$ 218		$ 218
Number of loans | Loans				1
Loan received				$ 52,500
Paycheck Protection Program Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest rate of loan		1.00%		1.00%
Number of loans | Loans				185
Loan received				$ 26,900
Loan origination fees		$ 1,200		$ 1,200
Percentage of revenue reduction	25.00%
Amount of debt forgiveness	$ 150,000
Paycheck Protection Program Loan [Member] | Minimum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Expected life of loans				2 years
Paycheck Protection Program Loan [Member] | Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Expected life of loans				5 years
Paycheck Protection Program Loan [Member] | SBA [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Guarantee percentage				100.00%
Number of loans | Loans				214
Loan received				$ 56,000
Loan origination fees		$ 2,000		2,000
Amount of debt forgiveness				$ 30,300

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Troubled Debt Restructurings Loans.

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