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Allowance For Loan Loss Additional Information (Details) - USD ($) $ in Thousands | Sep. 30, 2016 | Dec. 31, 2015 | Sep. 30, 2015
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Financing Receivable Allowance For Credit Loss Additional Information [Line Items] |  |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment | $ 4,542 |  | $ 4,167
Financing Receivable, Collectively Evaluated for Impairment | 425,956 |  | 418,786
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment | 36 |  | 960
Financing Receivable, Individually Evaluated for Impairment | 1,786 |  | 4,405
Allowance for loan losses | 4,578 | $ 4,289 | 5,127
Loans and Leases Receivable, Gross, Carrying Amount | 427,742 | 426,919 | 423,191
Commercial and Industrial Loans [Member] |  |  |
Financing Receivable Allowance For Credit Loss Additional Information [Line Items] |  |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment | 515 |  | 504
Financing Receivable, Collectively Evaluated for Impairment | 50,858 |  | 47,869
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment | 0 |  | 0
Financing Receivable, Individually Evaluated for Impairment | 23 |  | 56
Allowance for loan losses | 515 |  | 504
Loans and Leases Receivable, Gross, Carrying Amount | 50,881 | 52,479 | 47,925
Construction And Land Development Loans [Member] |  |  |
Financing Receivable Allowance For Credit Loss Additional Information [Line Items] |  |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment | 673 |  | 627
Financing Receivable, Collectively Evaluated for Impairment | 43,959 |  | 40,999
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment | 0 |  | 0
Financing Receivable, Individually Evaluated for Impairment | 45 |  | 593
Allowance for loan losses | 673 |  | 627
Loans and Leases Receivable, Gross, Carrying Amount | 44,004 | 43,694 | 41,592
Commercial Real Estate Loans, Total [Member] |  |  |
Financing Receivable Allowance For Credit Loss Additional Information [Line Items] |  |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment | 2,196 |  | 1,719
Financing Receivable, Collectively Evaluated for Impairment | 209,840 |  | 197,693
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment | 36 |  | 960
Financing Receivable, Individually Evaluated for Impairment | 1,718 |  | 3,756
Allowance for loan losses | 2,232 |  | 2,679
Loans and Leases Receivable, Gross, Carrying Amount | 211,558 | 203,853 | 201,449
Residential Real Estate Loans, Total [Member] |  |  |
Financing Receivable Allowance For Credit Loss Additional Information [Line Items] |  |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment | 1,020 |  | 1,103
Financing Receivable, Collectively Evaluated for Impairment | 112,303 |  | 117,863
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment | 0 |  | 0
Financing Receivable, Individually Evaluated for Impairment | 0 |  | 0
Allowance for loan losses | 1,020 |  | 1,103
Loans and Leases Receivable, Gross, Carrying Amount | 112,303 | 116,673 | 117,863
Consumer Installment and Revolving Loans [Member] |  |  |
Financing Receivable Allowance For Credit Loss Additional Information [Line Items] |  |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment | 138 |  | 214
Financing Receivable, Collectively Evaluated for Impairment | 8,996 |  | 14,362
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment | 0 |  | 0
Financing Receivable, Individually Evaluated for Impairment | 0 |  | 0
Allowance for loan losses | 138 |  | 214
Loans and Leases Receivable, Gross, Carrying Amount | $ 8,996 | $ 10,220 | $ 14,362

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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524 + Details
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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524 + Details
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- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524 + Details
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- Definition The balance of financing receivables that were individually evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524 + Details
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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 Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section L -Subsection 1 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 + Details
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