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FAIR VALUE - ASSETS AND LIABILITIES MEASURED ON RECURRING BASIS (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—Trading	$ 1,758	$ 1,983
Available-for-sale	262,518	187,335
Loans Held for Sale	$ 4,973	$ 29,768	$ 51,995
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Accounts payable, accrued liabilities and other liabilities	Accounts payable, accrued liabilities and other liabilities
Municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—Trading	$ 1,758	$ 1,983
Available-for-sale	3,248	3,565
Agency MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—Trading	0	0
Available-for-sale	25,325	23,913
Securities – Non-agency MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—Trading	0	0
Available-for-sale	186,814	67,615
Asset-backed securities and structured notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—Trading	0	0
Available-for-sale	47,131	92,242
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—Trading	0	0
Available-for-sale	0	0
Loans Held for Sale	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]
Securities—Trading	1,758	1,983
Available-for-sale	75,704	119,720
Loans Held for Sale	4,973	29,768
Mortgage servicing rights	0	0
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—Trading	0	0
Available-for-sale	186,814	67,615
Loans Held for Sale	0	0
Mortgage servicing rights	25,213	17,911
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	262,518	187,335
Loans Held for Sale	4,973	29,768
Mortgage servicing rights	25,213	17,911
Other assets—Derivative instruments	464	2,280
Other liabilities—Derivative instruments	0	75
Fair Value, Measurements, Recurring \| Municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—Trading	1,758
Available-for-sale	3,248	3,565
Fair Value, Measurements, Recurring \| Collateralized Debt Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—Trading		1,983
Fair Value, Measurements, Recurring \| Agency MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	25,325	23,913
Fair Value, Measurements, Recurring \| Securities – Non-agency MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	186,814	67,615
Fair Value, Measurements, Recurring \| Asset-backed securities and structured notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	47,131	92,242
Fair Value, Measurements, Recurring \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	0	0
Loans Held for Sale	0	0
Mortgage servicing rights	0	0
Other assets—Derivative instruments	0	0
Other liabilities—Derivative instruments	0	0
Fair Value, Measurements, 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—Trading	0
Available-for-sale	0	0
Fair Value, Measurements, 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]
Securities—Trading		0
Fair Value, Measurements, Recurring \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Agency MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	0	0
Fair Value, Measurements, Recurring \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Securities – Non-agency MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	0	0
Fair Value, Measurements, Recurring \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Asset-backed securities and structured notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	0	0
Fair Value, Measurements, Recurring \| Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	75,704	119,720
Loans Held for Sale	4,973	29,768
Mortgage servicing rights	0	0
Other assets—Derivative instruments	0	0
Other liabilities—Derivative instruments	0	0
Fair Value, Measurements, Recurring \| Significant Other Observable Inputs (Level 2) \| Municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—Trading	1,758
Available-for-sale	3,248	3,565
Fair Value, Measurements, Recurring \| Significant Other Observable Inputs (Level 2) \| Collateralized Debt Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—Trading		1,983
Fair Value, Measurements, Recurring \| Significant Other Observable Inputs (Level 2) \| Agency MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	25,325	23,913
Fair Value, Measurements, Recurring \| Significant Other Observable Inputs (Level 2) \| Securities – Non-agency MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	0	0
Fair Value, Measurements, Recurring \| Significant Other Observable Inputs (Level 2) \| Asset-backed securities and structured notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	47,131	92,242
Fair Value, Measurements, Recurring \| Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	186,814	67,615
Loans Held for Sale	0	0
Mortgage servicing rights	25,213	17,911
Other assets—Derivative instruments	464	2,280
Other liabilities—Derivative instruments	0	75
Fair Value, Measurements, Recurring \| Significant Unobservable Inputs (Level 3) \| Municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—Trading	0
Available-for-sale	0	0
Fair Value, Measurements, Recurring \| Significant Unobservable Inputs (Level 3) \| Collateralized Debt Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—Trading		0
Fair Value, Measurements, Recurring \| Significant Unobservable Inputs (Level 3) \| Agency MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	0	0
Fair Value, Measurements, Recurring \| Significant Unobservable Inputs (Level 3) \| Securities – Non-agency MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	186,814	67,615
Fair Value, Measurements, Recurring \| Significant Unobservable Inputs (Level 3) \| Asset-backed securities and structured notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	$ 0	$ 0