LOANS AND ALLOWANCE FOR LOAN LOSSES - Activity in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Activity in allowance for loan losses
Balance, beginning of period	$ 17,517	$ 14,460	$ 14,655	$ 14,014
Provision for loan losses	2,200	300	5,025	900
Charge-offs	(227)	(123)	(918)	(581)
Recoveries	235	172	963	476
Balance, end of period	19,725	14,809	19,725	14,809
Unallocated
Activity in allowance for loan losses
Balance, beginning of period	172	448	140	570
Provision for loan losses	8	(322)	40	(444)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Balance, end of period	180	126	180	126
Commercial
Activity in allowance for loan losses
Balance, beginning of period	13,407	10,069	11,049	9,447
Provision for loan losses	2,245	545	4,494	1,096
Charge-offs	(196)	(50)	(692)	(165)
Recoveries	216	144	821	330
Balance, end of period	15,672	10,708	15,672	10,708
Commercial \| Commercial Real Estate
Activity in allowance for loan losses
Balance, beginning of period	9,347	6,847	7,634	6,876
Provision for loan losses	1,520	465	2,780	347
Charge-offs	(3)	0	(3)	(25)
Recoveries	171	111	624	225
Balance, end of period	11,035	7,423	11,035	7,423
Commercial \| Acquisition and Development
Activity in allowance for loan losses
Balance, beginning of period	1,069	1,008	959	817
Provision for loan losses	(219)	(188)	(117)	1
Charge-offs	0	0	0	0
Recoveries	0	0	8	2
Balance, end of period	850	820	850	820
Commercial \| Commercial and Industrial
Activity in allowance for loan losses
Balance, beginning of period	2,916	2,120	2,356	1,656
Provision for loan losses	963	269	1,875	753
Charge-offs	(193)	(50)	(689)	(140)
Recoveries	45	33	189	103
Balance, end of period	3,731	2,372	3,731	2,372
Commercial \| Municipal
Activity in allowance for loan losses
Balance, beginning of period	75	94	100	98
Provision for loan losses	(19)	(1)	(44)	(5)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Balance, end of period	56	93	56	93
Consumer
Activity in allowance for loan losses
Balance, beginning of period	3,938	3,943	3,466	3,997
Provision for loan losses	(53)	77	491	248
Charge-offs	(31)	(73)	(226)	(416)
Recoveries	19	28	142	146
Balance, end of period	3,873	3,975	3,873	3,975
Consumer \| Residential Mortgage
Activity in allowance for loan losses
Balance, beginning of period	3,552	3,734	3,147	3,753
Provision for loan losses	(71)	27	329	184
Charge-offs	0	(24)	(109)	(295)
Recoveries	6	5	120	100
Balance, end of period	3,487	3,742	3,487	3,742
Consumer \| Installment and Other
Activity in allowance for loan losses
Balance, beginning of period	386	209	319	244
Provision for loan losses	18	50	162	64
Charge-offs	(31)	(49)	(117)	(121)
Recoveries	13	23	22	46
Balance, end of period	$ 386	$ 233	$ 386	$ 233

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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- Definition

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

+ References

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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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- Definition

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

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