The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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The balance of financing receivables that were individually evaluated for impairment.

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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 before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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LOANS AND ALLOWANCE FOR LOAN LOSSES - Summary of Ending Loan Balances Evaluated for Impairment and Related Allowance for Loan Losses Allocation (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, Individually evaluated for impairment	$ 10,310	$ 11,026
Loans, Collectively evaluated for impairment	1,033,804	998,986
Total Loans	1,044,114	1,010,012
Allowance for loan losses, Individually evaluated for impairment	59	51
Allowance for loan losses, Collectively evaluated for impairment	12,941	12,745
Allowance for loan losses, Total	13,000	12,796	$ 12,668	$ 12,775
Commercial and Industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Loans	128,076	115,663
Municipal
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Loans	41,679	42,065
Installment and Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Loans	25,550	21,902
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, Individually evaluated for impairment	6,317	6,690
Loans, Collectively evaluated for impairment	702,684	674,935
Total Loans	709,001	681,625
Allowance for loan losses, Individually evaluated for impairment	0	0
Allowance for loan losses, Collectively evaluated for impairment	8,953	8,710
Allowance for loan losses, Total	8,953	8,710
Commercial \| Commercial Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, Individually evaluated for impairment	5,779	5,848
Loans, Collectively evaluated for impairment	494,056	487,068
Total Loans	499,835	492,916
Allowance for loan losses, Individually evaluated for impairment	0	0
Allowance for loan losses, Collectively evaluated for impairment	6,770	6,763
Allowance for loan losses, Total	6,770	6,763
Commercial \| Acquisition and Development
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, Individually evaluated for impairment	201	492
Loans, Collectively evaluated for impairment	39,210	30,489
Total Loans	39,411	30,981
Allowance for loan losses, Individually evaluated for impairment	0	0
Allowance for loan losses, Collectively evaluated for impairment	510	417
Allowance for loan losses, Total	510	417
Commercial \| Commercial and Industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, Individually evaluated for impairment	337	350
Loans, Collectively evaluated for impairment	127,739	115,313
Total Loans	128,076	115,663
Allowance for loan losses, Individually evaluated for impairment	0	0
Allowance for loan losses, Collectively evaluated for impairment	1,590	1,446
Allowance for loan losses, Total	1,590	1,446
Commercial \| Municipal
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, Individually evaluated for impairment	0	0
Loans, Collectively evaluated for impairment	41,679	42,065
Total Loans	41,679	42,065
Allowance for loan losses, Individually evaluated for impairment	0	0
Allowance for loan losses, Collectively evaluated for impairment	83	84
Allowance for loan losses, Total	83	84
Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, Individually evaluated for impairment	3,993	4,336
Loans, Collectively evaluated for impairment	331,120	324,051
Total Loans	335,113	328,387
Allowance for loan losses, Individually evaluated for impairment	59	51
Allowance for loan losses, Collectively evaluated for impairment	3,527	3,560
Allowance for loan losses, Total	3,586	3,611
Consumer \| Residential Mortgage
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, Individually evaluated for impairment	3,983	4,325
Loans, Collectively evaluated for impairment	305,580	302,160
Total Loans	309,563	306,485
Allowance for loan losses, Individually evaluated for impairment	51	42
Allowance for loan losses, Collectively evaluated for impairment	3,331	3,358
Allowance for loan losses, Total	3,382	3,400
Consumer \| Installment and Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, Individually evaluated for impairment	10	11
Loans, Collectively evaluated for impairment	25,540	21,891
Total Loans	25,550	21,902
Allowance for loan losses, Individually evaluated for impairment	8	9
Allowance for loan losses, Collectively evaluated for impairment	196	202
Allowance for loan losses, Total	204	211
Unallocated
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, Individually evaluated for impairment	0	0
Loans, Collectively evaluated for impairment	0	0
Total Loans	0	0
Allowance for loan losses, Individually evaluated for impairment	0	0
Allowance for loan losses, Collectively evaluated for impairment	461	475
Allowance for loan losses, Total	$ 461	$ 475