FAIR VALUE - ASSETS AND LIABILITIES MEASURED ON RECURRING BASIS (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Jun. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading	$ 8,151	$ 7,584
Securities available-for-sale	379,734	265,447
Loans held for sale, at fair value	33,990	20,871
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading	0	0
Securities available-for-sale	0	0
Loans held for sale, at fair value	0	0
Mortgage Servicing Rights	0	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading	0	0
Securities available-for-sale	297,508	256,083
Loans held for sale, at fair value	33,990	20,871
Mortgage Servicing Rights	0	0
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading	8,151	7,584
Securities available-for-sale	82,226	9,364
Loans held for sale, at fair value	0	0
Mortgage Servicing Rights	6,150	3,943
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	379,734	265,447
Loans held for sale, at fair value	33,990	20,871
Mortgage Servicing Rights	6,150	3,943
Other assets - Derivative instruments	2,340	2,202
Other liabilities - Derivative instruments	89	884
Recurring | Collateralized Debt Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading	8,151	7,584
Recurring | U.S. agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	33,264	33,722
Recurring | Non-agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	82,226	9,364
Recurring | Municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	29,373	34,719
Recurring | Other Debt Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	234,871	187,642
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	0	0
Loans held for sale, at fair value	0	0
Mortgage Servicing Rights	0	0
Other assets - Derivative instruments	0	0
Other liabilities - Derivative instruments	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Collateralized Debt Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Non-agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Debt Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	0	0
Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	297,508	256,083
Loans held for sale, at fair value	33,990	20,871
Mortgage Servicing Rights	0	0
Other assets - Derivative instruments	0	0
Other liabilities - Derivative instruments	0	0
Recurring | Significant Other Observable Inputs (Level 2) | Collateralized Debt Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading	0	0
Recurring | Significant Other Observable Inputs (Level 2) | U.S. agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	33,264	33,722
Recurring | Significant Other Observable Inputs (Level 2) | Non-agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	0	0
Recurring | Significant Other Observable Inputs (Level 2) | Municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	29,373	34,719
Recurring | Significant Other Observable Inputs (Level 2) | Other Debt Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	234,871	187,642
Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	82,226	9,364
Loans held for sale, at fair value	0	0
Mortgage Servicing Rights	6,150	3,943
Other assets - Derivative instruments	2,340	2,202
Other liabilities - Derivative instruments	89	884
Recurring | Significant Unobservable Inputs (Level 3) | Collateralized Debt Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading	8,151	7,584
Recurring | Significant Unobservable Inputs (Level 3) | U.S. agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Non-agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	82,226	9,364
Recurring | Significant Unobservable Inputs (Level 3) | Municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Other Debt Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	$ 0	$ 0