LOANS & ALLOWANCE FOR LOAN LOSS UNPAID PRINCIPAL BALANCE FOR PERFORMING AND NONPERFORMING (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Jun. 30, 2011
Financing Receivable, Recorded Investment [Line Items]
Gross loans	$ 1,740,499	$ 1,336,415
Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Gross loans	1,723,377	1,326,803
Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Gross loans	17,122	9,612
Commercial Real Estate Portfolio Segment | Commercial
Financing Receivable, Recorded Investment [Line Items]
Gross loans	35,174	37,985
Commercial Real Estate Portfolio Segment | Performing Financing Receivable [Member] | Commercial
Financing Receivable, Recorded Investment [Line Items]
Gross loans	34,749	37,985
Commercial Real Estate Portfolio Segment | Nonperforming | Commercial
Financing Receivable, Recorded Investment [Line Items]
Gross loans	425	0
Consumer Portfolio Segment | Recreational Vehicles and Autos
Financing Receivable, Recorded Investment [Line Items]
Gross loans	24,324	30,402
Consumer Portfolio Segment | Performing Financing Receivable [Member] | Recreational Vehicles and Autos
Financing Receivable, Recorded Investment [Line Items]
Gross loans	23,585	30,277
Consumer Portfolio Segment | Nonperforming | Recreational Vehicles and Autos
Financing Receivable, Recorded Investment [Line Items]
Gross loans	739	125
Other Financing Receivables Portfolio Segment | Other
Financing Receivable, Recorded Investment [Line Items]
Gross loans	100,549	66,586
Other Financing Receivables Portfolio Segment | Performing Financing Receivable [Member] | Other
Financing Receivable, Recorded Investment [Line Items]
Gross loans	100,549	66,586
Other Financing Receivables Portfolio Segment | Nonperforming | Other
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Residential Portfolio Segment | Multi-family
Financing Receivable, Recorded Investment [Line Items]
Gross loans	687,661	647,381
Residential Portfolio Segment | Single Family
Financing Receivable, Recorded Investment [Line Items]
Gross loans	863,624	517,637
Residential Portfolio Segment | Home Equity
Financing Receivable, Recorded Investment [Line Items]
Gross loans	29,167	36,424
Residential Portfolio Segment | Performing Financing Receivable [Member] | Multi-family
Financing Receivable, Recorded Investment [Line Items]
Gross loans	681,904	644,637
Residential Portfolio Segment | Performing Financing Receivable [Member] | Single Family
Financing Receivable, Recorded Investment [Line Items]
Gross loans	853,525	511,051
Residential Portfolio Segment | Performing Financing Receivable [Member] | Home Equity
Financing Receivable, Recorded Investment [Line Items]
Gross loans	29,065	36,267
Residential Portfolio Segment | Nonperforming | Multi-family
Financing Receivable, Recorded Investment [Line Items]
Gross loans	5,757	2,744
Residential Portfolio Segment | Nonperforming | Single Family
Financing Receivable, Recorded Investment [Line Items]
Gross loans	10,099	6,586
Residential Portfolio Segment | Nonperforming | Home Equity
Financing Receivable, Recorded Investment [Line Items]
Gross loans	$ 102	$ 157