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Loans and Allowance for Loan Losses (Details 10) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Summary of activity related to our allowance for loan losses |  |  |
Balance, beginning of period | $ 14,855 | $ 13,629 | $ 11,752
Provision | 2,000 | 2,300 | 3,200
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] |  |  |
Summary of activity related to our allowance for loan losses |  |  |
Balance, beginning of period | 10,039 | 9,672 | 8,216
Provision | 920 | 987 |
Loan charge-offs | (1,227) | (1,178) |
Loan recoveries | 205 | 558 |
Net loan charge-offs | (1,022) | (620) |
Balance, end of period | 9,937 | 10,039 | 9,672
Consumer [Member] |  |  |
Summary of activity related to our allowance for loan losses |  |  |
Balance, beginning of period | 4,816 | 3,957 | 3,536
Provision | 1,080 | 1,313 |
Loan charge-offs | (411) | (470) |
Loan recoveries | 101 | 16 |
Net loan charge-offs | (310) | (454) |
Balance, end of period | 5,586 | 4,816 | 3,957
Unallocated [Member] |  |  |
Summary of activity related to our allowance for loan losses |  |  |
Balance, beginning of period |  |  |
Provision |  |  |
Loan charge-offs |  |  |
Loan recoveries |  |  |
Net loan charge-offs |  |  |
Balance, end of period |  |  |

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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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- Definition Amount of increase in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from recoveries of amounts previously written off or reestablishment of reserves that had previously been utilized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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