LOANS AND ALLOWANCE FOR LOAN LOSSES - Activity in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Activity in allowance for loan losses
Balance, beginning of period	$ 14,014	$ 12,796	$ 12,796
Provision for loan losses	400	200	200
Charge-offs	(334)		(71)
Recoveries	203		75
Balance, end of period	14,283	13,000	14,014
Unallocated
Activity in allowance for loan losses
Balance, beginning of period	570	475	475
Provision for loan losses	(175)	(14)
Charge-offs	0	0
Recoveries	0	0
Balance, end of period	395	461	570
Commercial
Activity in allowance for loan losses
Balance, beginning of period	9,447	8,710	8,710
Provision for loan losses	412	242
Charge-offs	(68)	0
Recoveries	115	1
Balance, end of period	9,906	8,953	9,447
Commercial \| Commercial Real Estate
Activity in allowance for loan losses
Balance, beginning of period	6,876	6,763	6,763
Provision for loan losses	103	7
Charge-offs	(25)	0
Recoveries	71	0
Balance, end of period	7,025	6,770	6,876
Commercial \| Acquisition and Development
Activity in allowance for loan losses
Balance, beginning of period	817	417	417
Provision for loan losses	150	92
Charge-offs	0	0
Recoveries	2	1
Balance, end of period	969	510	817
Commercial \| Commercial and Industrial
Activity in allowance for loan losses
Balance, beginning of period	1,656	1,446	1,446
Provision for loan losses	159	144
Charge-offs	(43)	0
Recoveries	42	0
Balance, end of period	1,814	1,590	1,656
Commercial \| Municipal
Activity in allowance for loan losses
Balance, beginning of period	98	84	84
Provision for loan losses	0	(1)
Charge-offs	0	0
Recoveries	0	0
Balance, end of period	98	83	98
Consumer
Activity in allowance for loan losses
Balance, beginning of period	3,997	3,611	3,611
Provision for loan losses	163	(28)
Charge-offs	(266)	(71)
Recoveries	88	74
Balance, end of period	3,982	3,586	3,997
Consumer \| Residential Mortgage
Activity in allowance for loan losses
Balance, beginning of period	3,753	3,400	3,400
Provision for loan losses	189	(35)
Charge-offs	(246)	0
Recoveries	69	17
Balance, end of period	3,765	3,382	3,753
Consumer \| Installment and Other
Activity in allowance for loan losses
Balance, beginning of period	244	211	211
Provision for loan losses	(26)	7
Charge-offs	(20)	(71)
Recoveries	19	57
Balance, end of period	$ 217	$ 204	$ 244

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

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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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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- Definition

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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