ALLOWANCE FOR LOAN LOSSES - Allowance Activity (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Activity in the allowance for loan losses
Balance at beginning of period	$ 13,866
Provision (releases) for loan losses	324	$ 795
Balance at end of period	13,997
Allowance For Loan Losses
Total	13,866		$ 13,997
Business Activities Loans
Activity in the allowance for loan losses
Balance at beginning of period	13,581	12,153
Charged-off loans	(110)	(254)
Recoveries on charged-off loans	38	20
Provision (releases) for loan losses	193	495
Balance at end of period	13,702	12,414
Allowance For Loan Losses
Individually evaluated for impairment			533	$ 649
Collectively evaluated			13,169	11,765
Total	13,581	12,153	13,702	12,414
Business Activities Loans \| Commercial real estate
Activity in the allowance for loan losses
Balance at beginning of period	6,811	6,037
Charged-off loans	(57)	0
Recoveries on charged-off loans	16	15
Provision (releases) for loan losses	(195)	(54)
Balance at end of period	6,575	5,998
Allowance For Loan Losses
Individually evaluated for impairment			396	433
Collectively evaluated			6,179	5,565
Total	6,811	6,037	6,575	5,998
Business Activities Loans \| Commercial and industrial
Activity in the allowance for loan losses
Balance at beginning of period	2,380	2,373
Charged-off loans	0	(84)
Recoveries on charged-off loans	1	2
Provision (releases) for loan losses	397	321
Balance at end of period	2,778	2,612
Allowance For Loan Losses
Individually evaluated for impairment			53	132
Collectively evaluated			2,725	2,480
Total	2,380	2,373	2,778	2,612
Business Activities Loans \| Residential real estate
Activity in the allowance for loan losses
Balance at beginning of period	3,982	3,357
Charged-off loans	0	0
Recoveries on charged-off loans	18	1
Provision (releases) for loan losses	(47)	(54)
Balance at end of period	3,953	3,304
Allowance For Loan Losses
Individually evaluated for impairment			83	84
Collectively evaluated			3,870	3,220
Total	3,982	3,357	3,953	3,304
Business Activities Loans \| Consumer
Activity in the allowance for loan losses
Balance at beginning of period	408	386
Charged-off loans	(53)	(170)
Recoveries on charged-off loans	3	2
Provision (releases) for loan losses	38	282
Balance at end of period	396	500
Allowance For Loan Losses
Individually evaluated for impairment			1	0
Collectively evaluated			395	500
Total	408	386	396	500
Acquired Loans
Activity in the allowance for loan losses
Balance at beginning of period	285	172
Charged-off loans	(121)	(122)
Recoveries on charged-off loans	0	0
Provision (releases) for loan losses	131	215
Balance at end of period	295	265
Allowance For Loan Losses
Individually evaluated for impairment			38	121
Collectively evaluated			257	144
Total	285	172	295	265
Acquired Loans \| Commercial real estate
Activity in the allowance for loan losses
Balance at beginning of period	173	97
Charged-off loans	0	(54)
Recoveries on charged-off loans	0	0
Provision (releases) for loan losses	(12)	40
Balance at end of period	161	83
Allowance For Loan Losses
Individually evaluated for impairment			16	0
Collectively evaluated			145	83
Total	173	97	161	83
Acquired Loans \| Commercial and industrial
Activity in the allowance for loan losses
Balance at beginning of period	35	16
Charged-off loans	(16)	(18)
Recoveries on charged-off loans	0	0
Provision (releases) for loan losses	10	126
Balance at end of period	29	124
Allowance For Loan Losses
Individually evaluated for impairment			0	121
Collectively evaluated			29	3
Total	35	16	29	124
Acquired Loans \| Residential real estate
Activity in the allowance for loan losses
Balance at beginning of period	77	59
Charged-off loans	(104)	(31)
Recoveries on charged-off loans	0	0
Provision (releases) for loan losses	132	30
Balance at end of period	105	58
Allowance For Loan Losses
Individually evaluated for impairment			22	0
Collectively evaluated			83	58
Total	77	59	105	58
Acquired Loans \| Consumer
Activity in the allowance for loan losses
Balance at beginning of period	0	0
Charged-off loans	(1)	(19)
Recoveries on charged-off loans	0	0
Provision (releases) for loan losses	1	19
Balance at end of period	0	0
Allowance For Loan Losses
Individually evaluated for impairment			0	0
Collectively evaluated			0	0
Total	$ 0	$ 0	$ 0	$ 0

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

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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount of expense related to estimated loss from loan and lease transactions.

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