LOANS & ALLOWANCE FOR LOAN LOSS - LOANS BY CREDIT QUALITY INDICATOR (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Jun. 30, 2013
Financing Receivable, Recorded Investment [Line Items]
Gross loans	$ 3,154,023	$ 2,300,920
Ratio of Grade Class to Gross Loans	100.00%	100.00%
Single Family
Financing Receivable, Recorded Investment [Line Items]
Gross loans	1,670,078	1,070,668
Single Family | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	1,548,651	928,153
Single Family | Purchased
Financing Receivable, Recorded Investment [Line Items]
Gross loans	121,427	142,515
Home Equity
Financing Receivable, Recorded Investment [Line Items]
Gross loans	18,716	22,537
Home Equity | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	4,510	5,954
Home Equity | Purchased
Financing Receivable, Recorded Investment [Line Items]
Gross loans	14,206	16,583
Warehouse and other
Financing Receivable, Recorded Investment [Line Items]
Gross loans	263,334	204,878
Warehouse and other | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	263,334	204,878
Commercial & Industrial
Financing Receivable, Recorded Investment [Line Items]
Gross loans	146,129	78,721
Commercial & Industrial | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	146,129	78,721
Commercial Real Estate Secured
Financing Receivable, Recorded Investment [Line Items]
Gross loans	24,441	29,000
Commercial Real Estate Secured | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	6,221	6,627
Commercial Real Estate Secured | Purchased
Financing Receivable, Recorded Investment [Line Items]
Gross loans	18,220	22,373
Multi-family
Financing Receivable, Recorded Investment [Line Items]
Gross loans	906,275	768,023
Multi-family | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	738,972	560,014
Multi-family | Purchased
Financing Receivable, Recorded Investment [Line Items]
Gross loans	167,303	208,009
RV / Auto
Financing Receivable, Recorded Investment [Line Items]
Gross loans	15,494	18,530
RV / Auto | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	15,494	18,530
Factoring
Financing Receivable, Recorded Investment [Line Items]
Gross loans	108,871	108,144
Factoring | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	108,871	108,144
Other
Financing Receivable, Recorded Investment [Line Items]
Gross loans	685	419
Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	3,095,354	2,255,085
Ratio of Grade Class to Gross Loans	98.14%	98.01%
Pass | Single Family | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	1,540,220	920,254
Pass | Single Family | Purchased
Financing Receivable, Recorded Investment [Line Items]
Gross loans	109,279	131,213
Pass | Home Equity | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	4,460	5,866
Pass | Home Equity | Purchased
Financing Receivable, Recorded Investment [Line Items]
Gross loans	14,206	16,583
Pass | Warehouse and other | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	263,334	204,878
Pass | Commercial & Industrial | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	146,129	77,721
Pass | Commercial Real Estate Secured | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	6,221	6,627
Pass | Commercial Real Estate Secured | Purchased
Financing Receivable, Recorded Investment [Line Items]
Gross loans	13,471	17,146
Pass | Multi-family | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	717,076	554,924
Pass | Multi-family | Purchased
Financing Receivable, Recorded Investment [Line Items]
Gross loans	156,686	193,804
Pass | RV / Auto | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	14,716	17,508
Pass | Factoring | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	108,871	108,144
Pass | Other
Financing Receivable, Recorded Investment [Line Items]
Gross loans	685	417
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	25,379	18,766
Ratio of Grade Class to Gross Loans	0.80%	0.82%
Special Mention | Single Family | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	5,026	5,371
Special Mention | Single Family | Purchased
Financing Receivable, Recorded Investment [Line Items]
Gross loans	2,951	1,323
Special Mention | Home Equity | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	30	32
Special Mention | Home Equity | Purchased
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Special Mention | Warehouse and other | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Special Mention | Commercial & Industrial | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	1,000
Special Mention | Commercial Real Estate Secured | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Special Mention | Commercial Real Estate Secured | Purchased
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	951
Special Mention | Multi-family | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	14,318	1,358
Special Mention | Multi-family | Purchased
Financing Receivable, Recorded Investment [Line Items]
Gross loans	2,896	8,482
Special Mention | RV / Auto | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	158	247
Special Mention | Factoring | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Special Mention | Other
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	2
Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	33,290	26,551
Ratio of Grade Class to Gross Loans	1.06%	1.15%
Substandard | Single Family | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	3,405	2,528
Substandard | Single Family | Purchased
Financing Receivable, Recorded Investment [Line Items]
Gross loans	9,197	9,979
Substandard | Home Equity | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	20	56
Substandard | Home Equity | Purchased
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Substandard | Warehouse and other | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Substandard | Commercial & Industrial | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Substandard | Commercial Real Estate Secured | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Substandard | Commercial Real Estate Secured | Purchased
Financing Receivable, Recorded Investment [Line Items]
Gross loans	4,749	3,865
Substandard | Multi-family | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	7,578	3,625
Substandard | Multi-family | Purchased
Financing Receivable, Recorded Investment [Line Items]
Gross loans	7,721	5,723
Substandard | RV / Auto | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	620	775
Substandard | Factoring | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Substandard | Other
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	518
Ratio of Grade Class to Gross Loans	0.00%	0.02%
Doubtful | Single Family | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Doubtful | Single Family | Purchased
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Doubtful | Home Equity | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Doubtful | Home Equity | Purchased
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Doubtful | Warehouse and other | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Doubtful | Commercial & Industrial | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Doubtful | Commercial Real Estate Secured | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Doubtful | Commercial Real Estate Secured | Purchased
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	411
Doubtful | Multi-family | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	107
Doubtful | Multi-family | Purchased
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Doubtful | RV / Auto | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Doubtful | Factoring | In-house originated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Doubtful | Other
Financing Receivable, Recorded Investment [Line Items]
Gross loans	$ 0	$ 0