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Loans and Allowance for Loan Losses (Details 9) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Financing Receivable, Allowance For Credit Losses [Roll Forward] |  |  |
Balance, beginning of period | $ 14,855 | $ 13,629 | $ 11,752
Provision for loan losses | 2,000 | 2,300 | 3,200
Total loan charge-offs | (1,638) | (1,648) | (1,508)
Loan recoveries | 306 | 574 | 185
Net loan charge-offs | (1,332) | (1,074) | (1,323)
Balance, end of period | 15,523 | 14,855 | 13,629
Commercial [Member] |  |  |
Financing Receivable, Allowance For Credit Losses [Roll Forward] |  |  |
Balance, beginning of period | 10,039 | 9,672 |
Total loan charge-offs | (1,227) | (1,178) | (1,237)
Loan recoveries | 205 | 558 | 139
Balance, end of period | 9,937 | 10,039 | 9,672
Commercial [Member] | Owner occupied RE [Member] |  |  |
Financing Receivable, Allowance For Credit Losses [Roll Forward] |  |  |
Total loan charge-offs |  | (5) | (48)
Loan recoveries |  |  |
Commercial [Member] | Non-owner occupied RE [Member] |  |  |
Financing Receivable, Allowance For Credit Losses [Roll Forward] |  |  |
Total loan charge-offs | (589) | (100) | (258)
Loan recoveries | 119 | 155 | 10
Commercial [Member] | Business [Member] |  |  |
Financing Receivable, Allowance For Credit Losses [Roll Forward] |  |  |
Total loan charge-offs | (638) | (1,031) | (881)
Loan recoveries | 86 | 403 | 129
Commercial [Member] | Construction [Member] |  |  |
Financing Receivable, Allowance For Credit Losses [Roll Forward] |  |  |
Total loan charge-offs |  | (42) | (50)
Loan recoveries |  |  |
Consumer [Member] |  |  |
Financing Receivable, Allowance For Credit Losses [Roll Forward] |  |  |
Balance, beginning of period | 4,816 | 3,957 |
Total loan charge-offs | (411) | (470) | (271)
Loan recoveries | 101 | 16 | 46
Balance, end of period | 5,586 | 4,816 | 3,957
Consumer [Member] | Other [Member] |  |  |
Financing Receivable, Allowance For Credit Losses [Roll Forward] |  |  |
Total loan charge-offs | (11) | (210) | (5)
Loan recoveries | 2 | 5 |
Consumer [Member] | Real estate [Member] |  |  |
Financing Receivable, Allowance For Credit Losses [Roll Forward] |  |  |
Total loan charge-offs |  | (194) | (173)
Loan recoveries | 86 | 10 |
Consumer [Member] | Home equity [Member] |  |  |
Financing Receivable, Allowance For Credit Losses [Roll Forward] |  |  |
Total loan charge-offs | (400) | (66) | (93)
Loan recoveries | 13 | 1 | 46
Consumer [Member] | Construction [Member] |  |  |
Financing Receivable, Allowance For Credit Losses [Roll Forward] |  |  |
Total loan charge-offs |  |  |
Loan recoveries |  |  |

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- Definition Allowance for loan and lease losses write offs net of recoveries. + References No definition available. + Details
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- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + 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 (c)(3) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 2: 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 + Details
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- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + 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 (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value. + 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 (c)(2) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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