| **Allowance for Loan Losses (Tables)**                                   | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              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| **Receivables [Abstract]**                                               |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 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| Allowance for loan losses by class of financing receivable and allowance | A breakdown of the allowance for loan losses as of June 30, 2014, December 31, 2013, and June 30, 2013, by class of financing receivable and allowance element, is presented in the following tables:As of June 30, 2014Specific Reserves on Loans Evaluated Individually for Impairment General Reserves on Loans Based on Historical Loss Experience Reserves for Qualitative Factors UnallocatedReserves Total ReservesCommercial            Real estate$1,150,000 $1,246,000 $1,840,000 $— $4,236,000   Construction487,000 86,000 127,000 — 700,000   Other830,000 530,000 783,000 — 2,143,000Municipal— — 16,000 — 16,000Residential            Term606,000 288,000 370,000 — 1,264,000   Construction— 10,000 13,000 — 23,000Home equity line of credit73,000 389,000 291,000 — 753,000Consumer— 383,000 199,000 — 582,000Unallocated— —  . 1,927,000 1,927,000 $3,146,000 $2,932,000 $3,639,000 $1,927,000 $11,644,000As of December 31, 2013Specific Reserves on Loans Evaluated Individually for Impairment General Reserves on Loans Based on Historical Loss Experience Reserves for Qualitative Factors UnallocatedReserves Total ReservesCommercial            Real estate$890,000 $1,927,000 $1,785,000 $— $4,602,000   Construction272,000 157,000 146,000 — 575,000   Other841,000 745,000 690,000 — 2,276,000Municipal— — 15,000 — 15,000Residential            Term404,000 342,000 353,000 — 1,099,000   Construction— 10,000 11,000 — 21,000Home equity line of credit54,000 343,000 278,000 — 675,000Consumer— 382,000 191,000 — 573,000Unallocated— — — 1,678,000 1,678,000 $2,461,000 $3,906,000 $3,469,000 $1,678,000 $11,514,000As of June 30, 2013Specific Reserves on Loans Evaluated Individually for Impairment General Reserves on Loans Based on Historical Loss Experience Reserves for Qualitative Factors UnallocatedReserves Total ReservesCommercial            Real estate$1,510,000 $2,148,000 $2,153,000 $— $5,811,000   Construction266,000 162,000 163,000 — 591,000   Other1,005,000 783,000 784,000 — 2,572,000Municipal— — 18,000 — 18,000Residential            Term218,000 380,000 428,000 — 1,026,000   Construction— 4,000 5,000 — 9,000Home equity line of credit7,000 402,000 328,000 — 737,000Consumer— 408,000 223,000 — 631,000Unallocated— — — 1,275,000 1,275,000 $3,006,000 $4,287,000 $4,102,000 $1,275,000 $12,670,000                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| Summary of Risk Ratings for Loans                                        | The following table summarizes the risk ratings for the Company's commercial real estate, commercial construction, commercial other, and municipal loans as of June 30, 2014: CommercialReal Estate CommercialConstruction CommercialOther MunicipalLoans All Risk-Rated Loans1 Strong$14,000 $— $269,000 $— $283,0002 Above Average10,936,000 741,000 7,820,000 16,003,000 35,500,0003 Satisfactory46,379,000 1,003,000 20,856,000 1,890,000 70,128,0004 Average106,209,000 11,106,000 48,042,000 — 165,357,0005 Watch37,995,000 789,000 14,145,000 — 52,929,0006 OAEM18,527,000 2,668,000 2,724,000 — 23,919,0007 Substandard25,600,000 777,000 10,378,000 — 36,755,0008 Doubtful— — — — —Total$245,660,000 $17,084,000 $104,234,000 $17,893,000 $384,871,000The following table summarizes the risk ratings for the Company's commercial real estate, commercial construction, commercial other, and municipal loans as of December 31, 2013: CommercialReal Estate CommercialConstruction CommercialOther MunicipalLoans All Risk-Rated Loans1 Strong$16,000 $— $265,000 $— $281,0002 Above Average14,565,000 804,000 6,719,000 16,230,000 38,318,0003 Satisfactory45,213,000 871,000 14,852,000 2,887,000 63,823,0004 Average100,343,000 14,938,000 45,792,000 — 161,073,0005 Watch32,326,000 26,000 10,439,000 — 42,791,0006 OAEM26,102,000 2,948,000 3,238,000 — 32,288,0007 Substandard27,115,000 795,000 13,622,000 — 41,532,0008 Doubtful263,000 — 362,000 — 625,000Total$245,943,000 $20,382,000 $95,289,000 $19,117,000 $380,731,000The following table summarizes the risk ratings for the Company's commercial real estate, commercial construction, commercial other, and municipal loans as of June 30, 2013: CommercialReal Estate CommercialConstruction CommercialOther MunicipalLoans All Risk-Rated Loans1 Strong$18,000 $— $255,000 $1,590,000 $1,863,0002 Above Average12,914,000 569,000 6,135,000 7,775,000 27,393,0003 Satisfactory39,155,000 2,716,000 17,439,000 4,183,000 63,493,0004 Average102,063,000 10,963,000 33,117,000 1,337,000 147,480,0005 Watch39,466,000 42,000 15,716,000 — 55,224,0006 OAEM24,265,000 3,001,000 4,196,000 — 31,462,0007 Substandard33,503,000 1,350,000 14,535,000 — 49,388,0008 Doubtful415,000 — — — 415,000Total$251,799,000 $18,641,000 $91,393,000 $14,885,000 $376,718,000                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               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| Allowance for Loan Losses Transactions                                   | The following table presents allowance for loan losses activity by class for the six months and quarter ended June 30, 2014, and allowance for loan loss balances by class and related loan balances by class as of June 30, 2014: CommercialMunicipalResidentialHome Equity Line of CreditConsumerUnallocatedTotal Real EstateConstructionOther TermConstruction    For the six months ended June 30, 2014Beginning balance$4,602,000$575,000$2,276,000$15,000$1,099,000$21,000$675,000$573,000$1,678,000$11,514,000Charge offs315,000—175,000—338,000—153,000219,000—1,200,000Recoveries2,000—705,000—8,000—2,000113,000—830,000Provision (credit)(53,000)125,000(663,000)1,000495,0002,000229,000115,000249,000500,000Ending balance$4,236,000$700,000$2,143,000$16,000$1,264,000$23,000$753,000$582,000$1,927,000$11,644,000For the three months ended June 30, 2014Beginning balance$4,500,000$590,000$2,241,000$15,000$1,232,000$22,000$708,000$517,000$1,830,000$11,655,000Charge offs295,000—1,000—219,000—141,000149,000—805,000Recoveries1,000—641,000—4,000—1,00047,000—694,000Provision (credit)30,000110,000(738,000)1,000247,0001,000185,000167,00097,000100,000Ending balance$4,236,000$700,000$2,143,000$16,000$1,264,000$23,000$753,000$582,000$1,927,000$11,644,000Allowance for loan losses as of June 30, 2014Ending balance specifically evaluated for impairment$1,150,000$487,000$830,000$—$606,000$—$73,000$—$—$3,146,000Ending balance collectively evaluated for impairment$3,086,000$213,000$1,313,000$16,000$658,000$23,000$680,000$582,000$1,927,000$8,498,000Related loan balances as of June 30, 2014Ending balance$245,660,000$17,084,000$104,234,000$17,893,000$379,027,000$13,253,000$97,821,000$16,892,000$—$891,864,000Ending balance specifically evaluated for impairment$14,803,000$1,492,000$4,325,000$—$16,102,000$—$1,533,000$—$—$38,255,000Ending balance collectively evaluated for impairment$230,857,000$15,592,000$99,909,000$17,893,000$362,925,000$13,253,000$96,288,000$16,892,000$—$853,609,000The following table presents allowance for loan losses activity by class for the year-ended December 31, 2013 and allowance for loan loss balances by class and related loan balances by class as of December 31, 2013: CommercialMunicipalResidential Home Equity Line of CreditConsumerUnallocatedTotal Real Estate Construction Other Term Construction     For the year ended December 31, 2013Beginning balance$5,865,000 $1,359,000 $2,050,000$18,000$1,109,000 $11,000 $654,000$592,000$842,000$12,500,000Charge offs150,000 963,000 2,583,000—1,118,000 — 611,000430,000—5,855,000Recoveries— — 359,000—103,000 — 24,000183,000—669,000Provision (credit)(1,113,000) 179,000 2,450,000(3,000)1,005,000 10,000 608,000228,000836,0004,200,000Ending balance$4,602,000 $575,000 $2,276,000$15,000$1,099,000 $21,000 $675,000$573,000$1,678,000$11,514,000Allowance for loan losses as of December 31, 2013Ending balance specifically evaluated for impairment$890,000 $272,000 $841,000$—$404,000 $— $54,000$—$—$2,461,000Ending balance collectively evaluated for impairment$3,712,000 $303,000 $1,435,000$15,000$695,000 $21,000 $621,000$573,000$1,678,000$9,053,000Related loan balances as of December 31, 2013Ending balance$245,943,000 $20,382,000 $95,289,000$19,117,000$377,218,000 $11,803,000 $91,549,000$15,066,000$—$876,367,000Ending balance specifically evaluated for impairment$14,935,000 $1,284,000 $6,698,000$—$17,786,000 $— $1,648,000$—$—$42,351,000Ending balance collectively evaluated for impairment$231,008,000 $19,098,000 $88,591,000$19,117,000$359,432,000 $11,803,000 $89,901,000$15,066,000$—$834,016,000The following table presents allowance for loan losses activity by class for the six months and quarter ended June 30, 2013, and allowance for loan loss balances by class and related loan balances by class as of June 30, 2013: CommercialMunicipalResidential Home Equity Line of CreditConsumerUnallocatedTotal Real EstateConstructionOther TermConstruction    For the six months ended June 30, 2013Beginning balance$5,865,000$1,359,000$2,050,000$18,000$1,109,000$11,000$654,000$592,000$842,000$12,500,000Charge offs61,000930,000521,000—607,000—431,000252,000—2,802,000Recoveries——144,000—36,000—2,00090,000—272,000Provision (credit)7,000162,000899,000—488,000(2,000)512,000201,000433,0002,700,000Ending balance$5,811,000$591,000$2,572,000$18,000$1,026,000$9,000$737,000$631,000$1,275,000$12,670,000For the three months ended June 30, 2013Beginning balance$5,879,000$1,064,000$2,115,000$18,000$1,113,000$9,000$859,000$574,000$1,089,000$12,720,000Charge offs7,000527,000233,000—407,000—69,000125,000—1,368,000Recoveries——41,000—34,000—1,00042,000—118,000Provision (credit)(61,000)54,000649,000—286,000—(54,000)140,000186,0001,200,000Ending balance$5,811,000$591,000$2,572,000$18,000$1,026,000$9,000$737,000$631,000$1,275,000$12,670,000Allowance for loan losses as of June 30, 2013Ending balance specifically evaluated for impairment$1,510,000$266,000$1,005,000$—$218,000$—$7,000$—$—$3,006,000Ending balance collectively evaluated for impairment$4,301,000$325,000$1,567,000$18,000$808,000$9,000$730,000$631,000$1,275,000$9,664,000Related loan balances as of June 30, 2013Ending balance$251,799,000$18,641,000$91,393,000$14,885,000$374,522,000$4,759,000$95,013,000$15,059,000$—$866,071,000Ending balance specifically evaluated for impairment$17,332,000$1,819,000$5,790,000$—$19,695,000$—$1,695,000$—$—$46,331,000Ending balance collectively evaluated for impairment$234,467,000$16,822,000$85,603,000$14,885,000$354,827,000$4,759,000$93,318,000$15,059,000$—$819,740,000 |

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| - Definition
Tabular disclosure for the roll forward of change in allowance for loan losses from period to period and related loan balances.
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No definition available.
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| - Definition
Tabular disclosure of financing receivables (examples of financing receivables include loans, trade accounts receivable and notes receivable) and activity in the allowance for credit losses account.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524
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| - Definition
Tabular disclosure of financing receivables by credit quality indicator. The credit quality indicator is a statistic about the credit quality of financing receivables. Examples include, but not limited to, consumer credit risk scores, credit-rating-agency ratings, an entity's internal credit risk grades, loan-to-value ratios, collateral, collection experience and other internal metrics.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 29 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953659-111524Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 55 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=32702940&loc=SL6953803-111525
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