FAIR VALUE - QUANTITATIVE INFORMATION FOR LEVEL 3 FAIR VALUE MEASURMENTS (NONRECURRING) (Details) - USD ($) $ in Thousands		12 Months Ended
		Jun. 30, 2016	Jun. 30, 2015
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Held to maturity - Fair Value		$ 202,677	$ 228,323
Level 3
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Held to maturity - Fair Value		$ 125,262	144,882
Level 3 | HTM Securities Non-Agency RMBS | Minimum | Discounted cash flows
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Projected Loss Severity		40.00%
Level 3 | HTM Securities Non-Agency RMBS | Maximum | Discounted cash flows
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Projected Loss Severity		68.80%
Fair Value, Measurements, Nonrecurring
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans, fair value		$ 32,069	31,048
Other real estate owned and foreclosed assets, fair value		252	1,240
Fair Value, Measurements, Nonrecurring | Impaired Loans, Mortgage
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans, fair value		28,610	23,059
Fair Value, Measurements, Nonrecurring | Impaired Loans, Home Equity
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans, fair value		33
Fair Value, Measurements, Nonrecurring | Impaired Loans, Home Equity | Sales comparison approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans, fair value			9
Fair Value, Measurements, Nonrecurring | Impaired Loans, Multifamily Real Estate
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans, fair value		2,218	5,399
Fair Value, Measurements, Nonrecurring | Impaired Loans, Commercial real estate secured
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans, fair value		254	2,128
Fair Value, Measurements, Nonrecurring | Impaired Loans, Auto and RV Secured
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans, fair value		278	453
Fair Value, Measurements, Nonrecurring | Other Real Estate Owned, Single Family Real Estate
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Other real estate owned and foreclosed assets, fair value			463
Fair Value, Measurements, Nonrecurring | Other Real Estate Owned, Multifamily Real Estate
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Other real estate owned and foreclosed assets, fair value		207	762
Fair Value, Measurements, Nonrecurring | Foreclosed assets, Autos and RVs
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Other real estate owned and foreclosed assets, fair value		45	15
Fair Value, Measurements, Nonrecurring | HTM Securities Non-Agency RMBS
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Held to maturity - Fair Value		79,164	88,094
Fair Value, Measurements, Nonrecurring | Level 3
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans, fair value		32,069	31,048
Other real estate owned and foreclosed assets, fair value		252	1,240
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Mortgage | Sales comparison approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans, fair value		$ 28,610	$ 23,059
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Mortgage | Minimum | Sales comparison approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments		(40.60%)	(52.50%)
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Mortgage | Maximum | Sales comparison approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments		69.50%	53.70%
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Mortgage | Weighted Average | Sales comparison approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	[1]	6.20%	3.90%
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Home Equity
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans, fair value			$ 9
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Home Equity | Sales comparison approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans, fair value		$ 33
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Home Equity | Minimum | Sales comparison approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments		(27.20%)	(9.70%)
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Home Equity | Maximum | Sales comparison approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments		0.00%	5.50%
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Home Equity | Weighted Average | Sales comparison approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	[1]	(11.10%)	(2.10%)
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Multifamily Real Estate | Sales comparison approach and income approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans, fair value		$ 2,218	$ 5,399
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Multifamily Real Estate | Minimum | Sales comparison approach and income approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments		(29.70%)	(73.40%)
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Multifamily Real Estate | Maximum | Sales comparison approach and income approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments		58.00%	80.60%
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Multifamily Real Estate | Weighted Average | Sales comparison approach and income approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	[1]	3.00%	(8.30%)
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Commercial real estate secured | Sales comparison approach and income approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans, fair value		$ 254	$ 2,128
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Commercial real estate secured | Minimum | Sales comparison approach and income approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments		0.00%	(66.50%)
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Commercial real estate secured | Maximum | Sales comparison approach and income approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments		66.70%	81.10%
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Commercial real estate secured | Weighted Average | Sales comparison approach and income approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	[1]	33.30%	(10.30%)
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Auto and RV Secured | Sales comparison approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans, fair value		$ 278	$ 453
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Auto and RV Secured | Minimum | Sales comparison approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments		0.00%	0.00%
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Auto and RV Secured | Maximum | Sales comparison approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments		22.80%	66.20%
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Auto and RV Secured | Weighted Average | Sales comparison approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	[1]	10.60%	10.80%
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Other
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans, fair value		$ 676
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Other | Discounted cash flows
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans, fair value		$ 676
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Other | Minimum | Discounted cash flows
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Projected Constant Prepayment Rate		0.00%
Constant Default Rate		0.00%
Projected Loss Severity		100.00%
Discount Rate over Treasury/LIBOR		6.60%
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Other | Maximum | Discounted cash flows
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Projected Constant Prepayment Rate		0.00%
Constant Default Rate		10.00%
Projected Loss Severity		100.00%
Discount Rate over Treasury/LIBOR		8.00%
Fair Value, Measurements, Nonrecurring | Level 3 | Impaired Loans, Other | Weighted Average | Discounted cash flows
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Projected Constant Prepayment Rate	[1]	0.00%
Constant Default Rate	[1]	5.00%
Projected Loss Severity	[1]	100.00%
Discount Rate over Treasury/LIBOR	[1]	7.30%
Fair Value, Measurements, Nonrecurring | Level 3 | Other Real Estate Owned, Single Family Real Estate | Sales comparison approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Other real estate owned and foreclosed assets, fair value			$ 463
Fair Value, Measurements, Nonrecurring | Level 3 | Other Real Estate Owned, Single Family Real Estate | Minimum | Sales comparison approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments			(20.30%)
Fair Value, Measurements, Nonrecurring | Level 3 | Other Real Estate Owned, Single Family Real Estate | Maximum | Sales comparison approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments			12.10%
Fair Value, Measurements, Nonrecurring | Level 3 | Other Real Estate Owned, Single Family Real Estate | Weighted Average | Sales comparison approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	[1]		(4.10%)
Fair Value, Measurements, Nonrecurring | Level 3 | Other Real Estate Owned, Multifamily Real Estate | Sales comparison approach and income approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Other real estate owned and foreclosed assets, fair value		$ 207	$ 762
Fair Value, Measurements, Nonrecurring | Level 3 | Other Real Estate Owned, Multifamily Real Estate | Minimum | Sales comparison approach and income approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments		0.00%	(37.10%)
Fair Value, Measurements, Nonrecurring | Level 3 | Other Real Estate Owned, Multifamily Real Estate | Maximum | Sales comparison approach and income approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments		25.00%	48.60%
Fair Value, Measurements, Nonrecurring | Level 3 | Other Real Estate Owned, Multifamily Real Estate | Weighted Average | Sales comparison approach and income approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	[1]	12.50%	5.70%
Fair Value, Measurements, Nonrecurring | Level 3 | Foreclosed assets, Autos and RVs | Sales comparison approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Other real estate owned and foreclosed assets, fair value		$ 45	$ 15
Fair Value, Measurements, Nonrecurring | Level 3 | Foreclosed assets, Autos and RVs | Minimum | Sales comparison approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments		0.00%	0.00%
Fair Value, Measurements, Nonrecurring | Level 3 | Foreclosed assets, Autos and RVs | Maximum | Sales comparison approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments		20.60%	20.70%
Fair Value, Measurements, Nonrecurring | Level 3 | Foreclosed assets, Autos and RVs | Weighted Average | Sales comparison approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	[1]	10.20%	10.30%
Fair Value, Measurements, Nonrecurring | Level 3 | HTM Securities Non-Agency RMBS | Discounted cash flows
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Held to maturity - Fair Value		$ 79,164	$ 88,094
Fair Value, Measurements, Nonrecurring | Level 3 | HTM Securities Non-Agency RMBS | Minimum | Discounted cash flows
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Projected Constant Prepayment Rate		2.60%	5.00%
Constant Default Rate		1.50%	1.50%
Projected Loss Severity		40.00%	15.00%
Discount Rate over Treasury/LIBOR		2.90%	3.00%
Fair Value, Measurements, Nonrecurring | Level 3 | HTM Securities Non-Agency RMBS | Maximum | Discounted cash flows
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Projected Constant Prepayment Rate		48.80%	43.80%
Constant Default Rate		17.80%	14.60%
Projected Loss Severity		65.90%	65.50%
Discount Rate over Treasury/LIBOR		8.20%	6.90%
Fair Value, Measurements, Nonrecurring | Level 3 | HTM Securities Non-Agency RMBS | Weighted Average | Discounted cash flows
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Projected Constant Prepayment Rate	[1]	12.00%	10.50%
Constant Default Rate	[1]	5.70%	6.70%
Projected Loss Severity	[1]	56.50%	54.40%
Discount Rate over Treasury/LIBOR	[1]	5.70%	5.80%

[1] For impaired loans and other real estate owned the ranges shown may vary positively or negatively based on the comparable sales reported in the current appraisal. In certain instances, the range can be significant due to small sample sizes and in some cases the property being valued having limited comparable sales with similar characteristics at the time the current appraisal is conducted.