LOANS AND ALLOWANCE FOR LOAN LOSSES - Activity in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Activity in allowance for loan losses
Balance, beginning of period	$ 12,751	$ 13,440	$ 12,775	$ 13,568
Provision for loan losses	100	250	200	250
Charge-offs	(135)	(104)	(342)	(587)
Recoveries	55	264	138	619
Balance, end of period	12,771	13,850	12,771	13,850
Unallocated
Activity in allowance for loan losses
Balance, beginning of period	470	625	414	774
Provision for loan losses	51	(1)	107	(150)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Balance, end of period	521	624	521	624
Commercial
Activity in allowance for loan losses
Balance, beginning of period	8,764	9,929	9,238	9,803
Provision for loan losses	(13)	373	(424)	283
Charge-offs	(30)	0	(130)	(47)
Recoveries	2	126	39	389
Balance, end of period	8,723	10,428	8,723	10,428
Commercial \| Commercial Real Estate
Activity in allowance for loan losses
Balance, beginning of period	6,777	8,133	7,530	7,883
Provision for loan losses	(102)	215	(840)	236
Charge-offs	0	0	(45)	(26)
Recoveries	0	124	30	379
Balance, end of period	6,675	8,472	6,675	8,472
Commercial \| Acquisition and Development
Activity in allowance for loan losses
Balance, beginning of period	579	587	580	850
Provision for loan losses	(90)	89	(93)	(174)
Charge-offs	0	0	0	0
Recoveries	1	0	3	0
Balance, end of period	490	676	490	676
Commercial \| Commercial and Industrial
Activity in allowance for loan losses
Balance, beginning of period	1,291	1,148	1,074	1,012
Provision for loan losses	191	76	458	225
Charge-offs	(30)	0	(85)	(21)
Recoveries	1	2	6	10
Balance, end of period	1,453	1,226	1,453	1,226
Commercial \| Municipal
Activity in allowance for loan losses
Balance, beginning of period	117	61	54	58
Provision for loan losses	(12)	(7)	51	(4)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Balance, end of period	105	54	105	54
Consumer
Activity in allowance for loan losses
Balance, beginning of period	3,517	2,886	3,123	2,991
Provision for loan losses	62	(122)	517	117
Charge-offs	(105)	(104)	(212)	(540)
Recoveries	53	138	99	230
Balance, end of period	3,527	2,798	3,527	2,798
Consumer \| Residential Mortgage
Activity in allowance for loan losses
Balance, beginning of period	3,386	2,706	2,979	2,870
Provision for loan losses	(12)	(119)	429	(8)
Charge-offs	(54)	(57)	(105)	(381)
Recoveries	41	96	58	145
Balance, end of period	3,361	2,626	3,361	2,626
Consumer \| Installment and Other
Activity in allowance for loan losses
Balance, beginning of period	131	180	144	121
Provision for loan losses	74	(3)	88	125
Charge-offs	(51)	(47)	(107)	(159)
Recoveries	12	42	41	85
Balance, end of period	$ 166	$ 172	$ 166	$ 172

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.

+ References

No definition available.

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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.

+ References

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- Definition

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

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