FINANCIAL INSTRUMENTS (Significant Unobservable Inputs Used in the Fair Value Measurements for Level 3 Assets and Liabilities Measured at Fair Value on a Recurring or Nonrecurring Basis) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Jun. 30, 2015
Significant Unobservable Inputs (Level 3)
Assets, Fair Value Disclosure [Abstract]
Servicing rights, net	$ 10,649		$ 11,067
Nonrecurring
Assets, Fair Value Disclosure [Abstract]
Servicing rights, net	0		0
Nonrecurring | Significant Unobservable Inputs (Level 3)
Assets, Fair Value Disclosure [Abstract]
Impaired loans	$ 6,168		7,407
Servicing rights, net			$ 11,067
Nonrecurring | Impaired loans | Minimum | Income Approach Valuation Technique | Significant Unobservable Inputs (Level 3)
Fair Value Inputs, Quantitative Information [Abstract]
Unobservable Input, Discount Rate	5.00%		3.30%
Unobservable Input, Loss Severity	0.00%		0.00%
Nonrecurring | Impaired loans | Minimum | Collateral valuation | Significant Unobservable Inputs (Level 3)
Fair Value Inputs, Quantitative Information [Abstract]
Unobservable Input, Discount from Appraised Value	0.00%		0.00%
Unobservable Input, Costs to Sell	6.00%		5.20%
Nonrecurring | Impaired loans | Maximum | Income Approach Valuation Technique | Significant Unobservable Inputs (Level 3)
Fair Value Inputs, Quantitative Information [Abstract]
Unobservable Input, Discount Rate	9.00%		10.00%
Unobservable Input, Loss Severity	19.70%		18.00%
Nonrecurring | Impaired loans | Maximum | Collateral valuation | Significant Unobservable Inputs (Level 3)
Fair Value Inputs, Quantitative Information [Abstract]
Unobservable Input, Discount from Appraised Value	62.10%		62.10%
Unobservable Input, Costs to Sell	12.50%		18.30%
Nonrecurring | Impaired loans | Weighted Average | Income Approach Valuation Technique | Significant Unobservable Inputs (Level 3)
Fair Value Inputs, Quantitative Information [Abstract]
Unobservable Input, Discount Rate	6.60%		6.50%
Unobservable Input, Loss Severity	5.30%		6.70%
Nonrecurring | Impaired loans | Weighted Average | Collateral valuation | Significant Unobservable Inputs (Level 3)
Fair Value Inputs, Quantitative Information [Abstract]
Unobservable Input, Discount from Appraised Value	16.10%		31.00%
Unobservable Input, Costs to Sell	6.90%		12.50%
Mortgage Loans
Assets, Fair Value Disclosure [Abstract]
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Prepayment Speed	9.70%	9.10%	9.70%
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Discount Rate	10.20%	10.50%	10.20%