LOANS - Summary of Impaired Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Business Activities Loans
Recorded Investment
Total	$ 31,708	$ 28,556
Unpaid Principal Balance
Total	49,207	38,090
Related Allowance
With an allowance recorded	134	197
Business Activities Loans \| Commercial real estate
Recorded Investment
Total	22,051	23,272
Unpaid Principal Balance
Total	33,553	31,708
Related Allowance
With an allowance recorded	7	9
Business Activities Loans \| Commercial real estate \| Other
Recorded Investment
With no related allowance	21,538	22,606
With an allowance recorded	513	666
Unpaid Principal Balance
With no related allowance	33,028	31,038
With an allowance recorded	525	670
Related Allowance
With an allowance recorded	7	9
Business Activities Loans \| Commercial and industrial loans
Recorded Investment
With no related allowance	5,319	1,584
With an allowance recorded	1,343	1,251
Total	6,662	2,835
Unpaid Principal Balance
With no related allowance	10,807	2,566
With an allowance recorded	1,349	1,235
Total	12,156	3,801
Related Allowance
With an allowance recorded	42	49
Business Activities Loans \| Residential mortgages
Recorded Investment
Total	2,857	2,106
Unpaid Principal Balance
Total	3,146	2,220
Related Allowance
With an allowance recorded	78	128
Business Activities Loans \| Residential mortgages \| 1-4 Family
Recorded Investment
With no related allowance	1,244	443
With an allowance recorded	1,613	1,663
Unpaid Principal Balance
With no related allowance	1,407	441
With an allowance recorded	1,739	1,779
Related Allowance
With an allowance recorded	78	128
Business Activities Loans \| Consumer
Recorded Investment
Total	138	343
Unpaid Principal Balance
Total	352	361
Related Allowance
With an allowance recorded	7	11
Business Activities Loans \| Consumer \| Other
Recorded Investment
With no related allowance	0	0
With an allowance recorded	11	13
Unpaid Principal Balance
With no related allowance	0	0
With an allowance recorded	11	13
Related Allowance
With an allowance recorded	0	1
Business Activities Loans \| Consumer \| Home equity
Recorded Investment
With no related allowance	35	230
With an allowance recorded	92	100
Unpaid Principal Balance
With no related allowance	240	242
With an allowance recorded	101	106
Related Allowance
With an allowance recorded	7	10
Acquired Loans
Recorded Investment
Total	5,198	5,758
Unpaid Principal Balance
Total	9,559	9,523
Related Allowance
With an allowance recorded	99	97
Acquired Loans \| Commercial real estate
Recorded Investment
Total	3,730	3,980
Unpaid Principal Balance
Total	6,615	6,906
Related Allowance
With an allowance recorded	84	9
Acquired Loans \| Commercial real estate \| Other
Recorded Investment
With no related allowance		3,055
With an allowance recorded		925
Unpaid Principal Balance
With no related allowance		5,959
With an allowance recorded		947
Related Allowance
With an allowance recorded		9
Acquired Loans \| Commercial and industrial loans
Recorded Investment
With no related allowance	343	538
With an allowance recorded	29	228
Total	372	766
Unpaid Principal Balance
With no related allowance	594	644
With an allowance recorded	30	232
Total	624	876
Related Allowance
With an allowance recorded	0	4
Acquired Loans \| Commercial and industrial loans \| Other
Recorded Investment
With no related allowance	2,664
With an allowance recorded	1,066
Unpaid Principal Balance
With no related allowance	5,544
With an allowance recorded	1,071
Related Allowance
With an allowance recorded	84
Acquired Loans \| Residential mortgages
Recorded Investment
Total	746	365
Unpaid Principal Balance
Total	769	441
Related Allowance
With an allowance recorded	8	36
Acquired Loans \| Residential mortgages \| 1-4 Family
Recorded Investment
With no related allowance	658	271
With an allowance recorded	88	94
Unpaid Principal Balance
With no related allowance	656	324
With an allowance recorded	113	117
Related Allowance
With an allowance recorded	8	36
Acquired Loans \| Consumer
Recorded Investment
Total	350	647
Unpaid Principal Balance
Total	1,551	1,300
Related Allowance
With an allowance recorded	7	48
Acquired Loans \| Consumer \| Other
Recorded Investment
With no related allowance	16	0
With an allowance recorded	41	43
Unpaid Principal Balance
With no related allowance	14	11
With an allowance recorded	39	40
Related Allowance
With an allowance recorded	7	7
Acquired Loans \| Consumer \| Home equity
Recorded Investment
With no related allowance	243	399
With an allowance recorded	50	205
Unpaid Principal Balance
With no related allowance	1,448	1,053
With an allowance recorded	50	196
Related Allowance
With an allowance recorded	$ 0	$ 41

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