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Loans and Allowance for loan losses (Age Analysis Of Past Due Financing Receivables) (Details) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due |  | $ 1,326 | $ 980
60 - 89 Days Past Due |  | 1,441 | 128
Greater than 90 Days |  | 2,664 | 3,232
Total Past Due |  | 5,431 | 4,340
Current |  | 429,697 | 395,023
Total loans | [1] | $ 435,128 | $ 399,363
Recorded Investment > 90 Days & Accruing |  |  |
Commercial [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due |  |  | $ 21
60 - 89 Days Past Due |  | $ 244 | 80
Greater than 90 Days |  | 483 | 1,965
Total Past Due |  | 727 | 2,066
Current |  | 76,046 | 61,193
Total loans |  | $ 76,773 | $ 63,259
Recorded Investment > 90 Days & Accruing |  |  |
Commercial Mortgages-Owner Occupied [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due |  | $ 425 | $ 192
60 - 89 Days Past Due |  | 571 |
Greater than 90 Days |  | 426 | 212
Total Past Due |  | 1,422 | 404
Current |  | 75,549 | 77,304
Total loans |  | $ 76,971 | $ 77,708
Recorded Investment > 90 Days & Accruing |  |  |
Commercial Mortgages-Non-Owner Occupied [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due |  | $ 189 | $ 86
60 - 89 Days Past Due |  | 90 |
Greater than 90 Days |  | 438 | 70
Total Past Due |  | 717 | 156
Current |  | 126,138 | 119,019
Total loans |  | $ 126,855 | $ 119,175
Recorded Investment > 90 Days & Accruing |  |  |
Commercial Construction [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Greater than 90 Days |  | $ 367 | $ 460
Total Past Due |  | 367 | 460
Current |  | 12,932 | 9,919
Total loans |  | $ 13,299 | $ 10,379
Recorded Investment > 90 Days & Accruing |  |  |
Consumer Unsecured [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due |  | $ 2 | $ 11
Greater than 90 Days |  | 31 |
Total Past Due |  | 33 | 11
Current |  | 6,828 | 5,749
Total loans |  | $ 6,861 | $ 5,760
Recorded Investment > 90 Days & Accruing |  |  |
Consumer Secured [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due |  | $ 198 | $ 15
60 - 89 Days Past Due |  | 68 |
Greater than 90 Days |  | 128 |
Total Past Due |  | 394 | 15
Current |  | 74,276 | 70,605
Total loans |  | $ 74,670 | $ 70,620
Recorded Investment > 90 Days & Accruing |  |  |
Residential Mortgages [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due |  | $ 512 | $ 626
60 - 89 Days Past Due |  | 468 | 48
Greater than 90 Days |  | 543 | 525
Total Past Due |  | 1,523 | 1,199
Current |  | 48,490 | 43,745
Total loans |  | $ 50,013 | $ 44,944
Recorded Investment > 90 Days & Accruing |  |  |
Residential Consumer Construction [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due |  |  | $ 29
Greater than 90 Days |  | $ 248 |
Total Past Due |  | 248 | 29
Current |  | 9,438 | 7,489
Total loans |  | $ 9,686 | $ 7,518
Recorded Investment > 90 Days & Accruing |  |  |
[1] | Includes net deferred loan costs of $263 and $330, respectively.

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- Definition Financing receivables that are less than 60 days past due but more than 29 days past due. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953401-111524 + Details
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