BUSINESS COMBINATION Acquired PCI Loans (Details) - USD ($) $ in Thousands	Nov. 01, 2019	Sep. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield		$ 4,331	$ 4,743	$ 5,216
AltaPacific Bank [Member]
Business Acquisition [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition	$ 5,881
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Non-Accretable Difference	(1,046)
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition	4,835
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield	(683)
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	$ 4,152