TIME CERTIFICATES OF DEPOSITS (Details) - USD ($)	12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
IRA deposit accounts permanently insured by DIF under management of FDIC	$ 250,000
Time certificates of deposits in denominations of $250,000 or more	163,300,000	$ 85,200,000
Time Deposits, Fiscal Year Maturity [Abstract]
2019	1,562,801,000
2020	125,581,000
2021	16,623,000
2022	6,929,000
2023	1,048,000
Total Certificates	1,712,982,000
Wholesale deposits	1,531,186,000	$ 476,173,000
Non-IRA deposits accounts permanently insured under Dodd-Frank act by DIF under management of FDIC	250,000
Wholesale Deposits [Member]
Time Deposits, Fiscal Year Maturity [Abstract]
Wholesale deposits	$ 1,440,000,000