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ALLOWANCE FOR LOAN LOSSES - Allowance Activity (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Jun. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Activity in the allowance for loan losses
Balance at beginning of period				$ 13,866
Provision (releases) for loan losses	$ 893	$ 643		1,779	$ 2,208
Balance at end of period	15,353			15,353
Allowance For Loan Losses
Total	15,353			13,866		$ 15,353
Business Activities Loans
Activity in the allowance for loan losses
Balance at beginning of period	14,290	12,723		13,581	12,153
Charged-off loans	(163)	(130)		(309)	(784)
Recoveries on charged-off loans	100	27		256	98
Provision (releases) for loan losses	814	584		1,513	1,737
Balance at end of period	15,041	13,204	$ 12,723	15,041	13,204
Allowance For Loan Losses
Individually evaluated for impairment						1,297	$ 842
Collectively evaluated						13,744	12,362
Total	14,290	12,723	12,723	13,581	12,153	15,041	13,204
Business Activities Loans | Commercial real estate
Activity in the allowance for loan losses
Balance at beginning of period	7,206	6,367		6,811	6,037
Charged-off loans	0	(29)		(57)	(186)
Recoveries on charged-off loans	1	7		131	68
Provision (releases) for loan losses	956	291		1,278	717
Balance at end of period	8,163	6,636	6,367	8,163	6,636
Allowance For Loan Losses
Individually evaluated for impairment						990	688
Collectively evaluated						7,173	5,948
Total	7,206	6,367	6,367	6,811	6,037	8,163	6,636
Business Activities Loans | Commercial and industrial
Activity in the allowance for loan losses
Balance at beginning of period	2,748	2,509		2,380	2,373
Charged-off loans	0	0		(13)	(111)
Recoveries on charged-off loans	62	18		62	23
Provision (releases) for loan losses	63	(31)		444	211
Balance at end of period	2,873	2,496	2,509	2,873	2,496
Allowance For Loan Losses
Individually evaluated for impairment						240	62
Collectively evaluated						2,633	2,434
Total	2,748	2,509	2,509	2,380	2,373	2,873	2,496
Business Activities Loans | Residential real estate
Activity in the allowance for loan losses
Balance at beginning of period	3,942	3,454		3,982	3,357
Charged-off loans	(108)	(61)		(110)	(61)
Recoveries on charged-off loans	36	0		55	2
Provision (releases) for loan losses	(111)	258		(168)	353
Balance at end of period	3,759	3,651	3,454	3,759	3,651
Allowance For Loan Losses
Individually evaluated for impairment						66	92
Collectively evaluated						3,693	3,559
Total	3,942	3,454	3,454	3,982	3,357	3,759	3,651
Business Activities Loans | Consumer
Activity in the allowance for loan losses
Balance at beginning of period	394	393		408	386
Charged-off loans	(55)	(40)		(129)	(426)
Recoveries on charged-off loans	1	2		8	5
Provision (releases) for loan losses	(94)	66		(41)	456
Balance at end of period	246	421	393	246	421
Allowance For Loan Losses
Individually evaluated for impairment						1	0
Collectively evaluated						245	421
Total	394	393	393	408	386	246	421
Acquired Loans
Activity in the allowance for loan losses
Balance at beginning of period	282	367		285	172
Charged-off loans	(52)		(168)	(242)	(492)
Recoveries on charged-off loans	3		25	3	132
Provision (releases) for loan losses	79		59	266	471
Balance at end of period	312	283	367	312	283
Allowance For Loan Losses
Individually evaluated for impairment						44	20
Collectively evaluated						268	263
Total	282	367	367	285	172	312	283
Acquired Loans | Commercial real estate
Activity in the allowance for loan losses
Balance at beginning of period	159	200		173	97
Charged-off loans	0		(30)	0	(136)
Recoveries on charged-off loans	0		25	0	43
Provision (releases) for loan losses	(2)		(23)	(16)	168
Balance at end of period	157	172	200	157	172
Allowance For Loan Losses
Individually evaluated for impairment						12	0
Collectively evaluated						145	172
Total	159	200	200	173	97	157	172
Acquired Loans | Commercial and industrial
Activity in the allowance for loan losses
Balance at beginning of period	22	82		35	16
Charged-off loans	0		(71)	(15)	(166)
Recoveries on charged-off loans	0		0	0	7
Provision (releases) for loan losses	(15)		33	(13)	187
Balance at end of period	7	44	82	7	44
Allowance For Loan Losses
Individually evaluated for impairment						0	0
Collectively evaluated						7	44
Total	22	82	82	35	16	7	44
Acquired Loans | Residential real estate
Activity in the allowance for loan losses
Balance at beginning of period	101	85		77	59
Charged-off loans	(52)		(62)	(222)	(126)
Recoveries on charged-off loans	0		0	0	0
Provision (releases) for loan losses	99		44	293	134
Balance at end of period	148	67	85	148	67
Allowance For Loan Losses
Individually evaluated for impairment						32	20
Collectively evaluated						116	47
Total	101	85	85	77	59	148	67
Acquired Loans | Consumer
Activity in the allowance for loan losses
Balance at beginning of period	0	0		0	0
Charged-off loans	0		(5)	(5)	(64)
Recoveries on charged-off loans	3		0	3	82
Provision (releases) for loan losses	(3)		5	2	(18)
Balance at end of period	0	0	0	0	0
Allowance For Loan Losses
Individually evaluated for impairment						0	0
Collectively evaluated						0	0
Total	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0

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- Definition

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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