LOANS, LEASES & ALLOWANCE FOR LOAN AND LEASE LOSSES - PAST DUE LOANS (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019
Financing Receivable, Past Due [Line Items]
Total	$ 58,533	$ 69,625
As a % of total gross loans and leases	0.60%	0.74%
Mortgage | In-house originated
Financing Receivable, Past Due [Line Items]
Total	$ 50,521	$ 63,324
Mortgage | Purchased
Financing Receivable, Past Due [Line Items]
Total	1,618	1,686
Multifamily secured - mortgage and financing | In-house originated
Financing Receivable, Past Due [Line Items]
Total	978	3,272
Auto and RV secured
Financing Receivable, Past Due [Line Items]
Total	530
Auto and RV secured | In-house originated
Financing Receivable, Past Due [Line Items]
Total		648
Commercial & Industrial
Financing Receivable, Past Due [Line Items]
Total	4,132
Other
Financing Receivable, Past Due [Line Items]
Total	754	695
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	$ 15,160	$ 14,646
As a % of total gross loans and leases	0.15%	0.15%
30-59 Days Past Due | Mortgage | In-house originated
Financing Receivable, Past Due [Line Items]
Total	$ 10,157	$ 12,008
30-59 Days Past Due | Mortgage | Purchased
Financing Receivable, Past Due [Line Items]
Total	261	228
30-59 Days Past Due | Multifamily secured - mortgage and financing | In-house originated
Financing Receivable, Past Due [Line Items]
Total	0	1,684
30-59 Days Past Due | Auto and RV secured
Financing Receivable, Past Due [Line Items]
Total	330
30-59 Days Past Due | Auto and RV secured | In-house originated
Financing Receivable, Past Due [Line Items]
Total		476
30-59 Days Past Due | Commercial & Industrial
Financing Receivable, Past Due [Line Items]
Total	4,132
30-59 Days Past Due | Other
Financing Receivable, Past Due [Line Items]
Total	280	250
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	$ 7,131	$ 16,000
As a % of total gross loans and leases	0.07%	0.17%
60-89 Days Past Due | Mortgage | In-house originated
Financing Receivable, Past Due [Line Items]
Total	$ 6,766	$ 15,616
60-89 Days Past Due | Mortgage | Purchased
Financing Receivable, Past Due [Line Items]
Total	0	0
60-89 Days Past Due | Multifamily secured - mortgage and financing | In-house originated
Financing Receivable, Past Due [Line Items]
Total	0	0
60-89 Days Past Due | Auto and RV secured
Financing Receivable, Past Due [Line Items]
Total	160
60-89 Days Past Due | Auto and RV secured | In-house originated
Financing Receivable, Past Due [Line Items]
Total		155
60-89 Days Past Due | Commercial & Industrial
Financing Receivable, Past Due [Line Items]
Total	0
60-89 Days Past Due | Other
Financing Receivable, Past Due [Line Items]
Total	205	229
90 Plus Days Past Due
Financing Receivable, Past Due [Line Items]
Total	$ 36,242	$ 38,979
As a % of total gross loans and leases	0.37%	0.41%
90 Plus Days Past Due | Mortgage | In-house originated
Financing Receivable, Past Due [Line Items]
Total	$ 33,598	$ 35,700
90 Plus Days Past Due | Mortgage | Purchased
Financing Receivable, Past Due [Line Items]
Total	1,357	1,458
90 Plus Days Past Due | Multifamily secured - mortgage and financing | In-house originated
Financing Receivable, Past Due [Line Items]
Total	978	1,588
90 Plus Days Past Due | Auto and RV secured
Financing Receivable, Past Due [Line Items]
Total	40
90 Plus Days Past Due | Auto and RV secured | In-house originated
Financing Receivable, Past Due [Line Items]
Total		17
90 Plus Days Past Due | Commercial & Industrial
Financing Receivable, Past Due [Line Items]
Total	0
90 Plus Days Past Due | Other
Financing Receivable, Past Due [Line Items]
Total	$ 269	$ 216