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LOANS AND LEASES AND ALLOWANCE FOR LOAN AND LEASE LOSSES - Loans and Leases by Class Modified as Troubled Debt Restructurings (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($) Loan	Dec. 31, 2017 USD ($) Loan	Dec. 31, 2016 USD ($) Loan
Commercial | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	2	1	0
Pre- Modification Outstanding Recorded Investment	$ 171	$ 2,706	$ 0
Post-Modification Outstanding Recorded Investment	$ 163	$ 2,706	$ 0
Commercial | SBA
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	1	0	0
Pre- Modification Outstanding Recorded Investment	$ 187	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	$ 187	$ 0	$ 0
Consumer
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	3	4	42
Pre- Modification Outstanding Recorded Investment	$ 358	$ 5,122	$ 10,278
Post-Modification Outstanding Recorded Investment	$ 350	$ 5,139	$ 10,273
Consumer | Single family residential mortgage
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	0	3	42
Pre- Modification Outstanding Recorded Investment	$ 0	$ 2,416	$ 10,278
Post-Modification Outstanding Recorded Investment	$ 0	$ 2,433	$ 10,273

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Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

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