LOANS AND LEASES - Changes in Other Real Estate Owned (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	$ 1,065	$ 5,300	$ 2,781	$ 6,284
Additions	1,545	1,963	2,174	2,250
Disposals	(618)	(1,130)	(2,840)	(2,292)
Write-downs	139	172	262	281
Balance at end of period	1,853	5,961	1,853	5,961
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Additions	1,020	50	1,190	172
Disposals	(326)	(682)	(2,430)	(1,607)
Write-downs	0	116	97	162
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Additions	525	1,913	984	2,078
Disposals	(292)	(448)	(410)	(685)
Write-downs	$ 139	$ 56	$ 165	$ 119