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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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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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 RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES - Summary of Ending Loan Balances Evaluated for Impairment and Related Allowance for Loan Losses Allocation (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, Individually evaluated for impairment	$ 17,264		$ 15,532
Loans, Collectively evaluated for impairment	745,594		689,414
Total Loans	762,858		704,946
Allowance for loan losses, Individually evaluated for impairment	119		188
Allowance for loan losses, Collectively evaluated for impairment	13,418		14,559
Allowance for loan losses, Total	13,537	$ 13,852	14,747	$ 16,019	$ 20,425	$ 20,965
Commercial and Industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Loans	69,017		48,995
Municipal
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Loans	58,270		61,191
Installment and other loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Loans	7,414		5,891
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, Individually evaluated for impairment	12,597		9,635
Loans, Collectively evaluated for impairment	494,190		452,718
Total Loans	506,787		462,353
Allowance for loan losses, Individually evaluated for impairment	0		2
Allowance for loan losses, Collectively evaluated for impairment	9,777		11,146
Allowance for loan losses, Total	9,777	9,815	11,148	11,646	16,076	14,993
Commercial \| Commercial Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, Individually evaluated for impairment	11,606		6,788
Loans, Collectively evaluated for impairment	324,350		315,218
Total Loans	335,956		322,006
Allowance for loan losses, Individually evaluated for impairment	0		2
Allowance for loan losses, Collectively evaluated for impairment	8,035		9,460
Allowance for loan losses, Total	8,035	8,132	9,462	10,002	14,053	13,215
Commercial \| Acquisition and Development
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, Individually evaluated for impairment	206		410
Loans, Collectively evaluated for impairment	43,338		29,751
Total Loans	43,544		30,161
Allowance for loan losses, Individually evaluated for impairment	0		0
Allowance for loan losses, Collectively evaluated for impairment	640		697
Allowance for loan losses, Total	640	720	697	535	852	670
Commercial \| Commercial and Industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, Individually evaluated for impairment	785		2,437
Loans, Collectively evaluated for impairment	68,232		46,558
Total Loans	69,017		48,995
Allowance for loan losses, Individually evaluated for impairment	0		0
Allowance for loan losses, Collectively evaluated for impairment	985		806
Allowance for loan losses, Total	985	844	806	922	993	864
Commercial \| Municipal
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, Individually evaluated for impairment	0		0
Loans, Collectively evaluated for impairment	58,270		61,191
Total Loans	58,270		61,191
Allowance for loan losses, Individually evaluated for impairment	0		0
Allowance for loan losses, Collectively evaluated for impairment	117		183
Allowance for loan losses, Total	117	119	183	187	178	244
Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, Individually evaluated for impairment	4,667		5,897
Loans, Collectively evaluated for impairment	251,404		236,696
Total Loans	256,071		242,593
Allowance for loan losses, Individually evaluated for impairment	119		186
Allowance for loan losses, Collectively evaluated for impairment	2,735		2,195
Allowance for loan losses, Total	2,854	3,100	2,381	2,355	2,548	3,904
Consumer \| Residential Mortgage
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, Individually evaluated for impairment	4,648		5,871
Loans, Collectively evaluated for impairment	244,009		230,831
Total Loans	248,657		236,702
Allowance for loan losses, Individually evaluated for impairment	111		173
Allowance for loan losses, Collectively evaluated for impairment	2,565		2,089
Allowance for loan losses, Total	2,676	2,918	2,262	2,154	2,362	3,780
Consumer \| Installment and other loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, Individually evaluated for impairment	19		26
Loans, Collectively evaluated for impairment	7,395		5,865
Total Loans	7,414		5,891
Allowance for loan losses, Individually evaluated for impairment	8		13
Allowance for loan losses, Collectively evaluated for impairment	170		106
Allowance for loan losses, Total	178	182	119	201	186	124
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	906		1,218
Allowance for loan losses, Total	$ 906	$ 937	$ 1,218	$ 2,018	$ 1,801	$ 2,068