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Loans Past Due Analysis (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	$ 429,548	$ 422,794
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	794	1,411
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	430,342	424,205
Financing Receivable, Recorded Investment, Nonaccrual Status	1,938	2,714
Loans and Leases Receivable, Gross, Carrying Amount	432,280	426,919	$ 397,075
Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	50,136	52,387
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	14	49
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	50,150	52,436
Financing Receivable, Recorded Investment, Nonaccrual Status	42	43
Loans and Leases Receivable, Gross, Carrying Amount	50,192	52,479	52,536
Construction And Land Development Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	45,758	43,111
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	129	0
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	45,887	43,111
Financing Receivable, Recorded Investment, Nonaccrual Status	66	583
Loans and Leases Receivable, Gross, Carrying Amount	45,953	43,694	37,925
Commercial Real Estate Owner Occupied Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	47,010	46,372
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	0	0
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	47,010	46,372
Financing Receivable, Recorded Investment, Nonaccrual Status	0	230
Loans and Leases Receivable, Gross, Carrying Amount	47,010	46,602
Commercial Real Estate Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	160,576	155,731
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	0	0
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	160,576	155,731
Financing Receivable, Recorded Investment, Nonaccrual Status	1,734	1,520
Loans and Leases Receivable, Gross, Carrying Amount	162,310	157,251
Commercial Real Estate Loans, Total [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	207,586	202,103
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	0	0
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	207,586	202,103
Financing Receivable, Recorded Investment, Nonaccrual Status	1,734	1,750
Loans and Leases Receivable, Gross, Carrying Amount	209,320	203,853	182,871
Residential Real Estate Consumer Mortgage Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	69,772	68,579
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	575	1,105
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	70,347	69,684
Financing Receivable, Recorded Investment, Nonaccrual Status	96	325
Loans and Leases Receivable, Gross, Carrying Amount	70,443	70,009
Residential Real Estate Investment Property Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	46,555	46,435
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	48	229
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	46,603	46,664
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Loans and Leases Receivable, Gross, Carrying Amount	46,603	46,664
Residential Real Estate Loans, Total [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	116,327	115,014
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	623	1,334
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	116,950	116,348
Financing Receivable, Recorded Investment, Nonaccrual Status	96	325
Loans and Leases Receivable, Gross, Carrying Amount	117,046	116,673	111,265
Consumer Installment and Revolving Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	9,741	10,179
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	28	28
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	9,769	10,207
Financing Receivable, Recorded Investment, Nonaccrual Status	0	13
Loans and Leases Receivable, Gross, Carrying Amount	$ 9,769	$ 10,220	$ 12,478

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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