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Securities - Narrative (Details) $ in Thousands | Jun. 30, 2017 USD ($) Security | Dec. 31, 2016 USD ($)
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Schedule of Available-for-sale Securities [Line Items] |  |
Carrying value of securities pledged as collateral | $ | $ 134,882 | $ 134,763
U.S. Government and agencies |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Number of available-for-sale securities, not in continuous loss position for 12 months or more | 39 |
Percentage of amortized cost | 4.00% |
Schedule of Held-to-maturity Securities [Line Items] |  |
Number of held to maturity securities | 10 |
Percentage of amortized cost | 1.00% |
Mortgage-backed securities, residential |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Number of available-for-sale securities, not in continuous loss position for 12 months or more | 4 |
Percentage of amortized cost | 2.00% |
Schedule of Held-to-maturity Securities [Line Items] |  |
Number of held to maturity securities | 20 |
Percentage of amortized cost | 2.00% |
State and municipal |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Number of available-for-sale securities, not in continuous loss position for 12 months or more | 10 |
Percentage of amortized cost | 3.00% |
CRA Mutual Fund |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Percentage of amortized cost | 1.00% |

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- Definition Available-for-sale, Securities in Unrealized Loss Positions, Unrealized Losses as Percentage of Amortized Cost + References No definition available. + Details
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- Definition Number of investment positions in available-for-sale investments in a continuous unrealized loss position for less than one year or normal operating cycle, if longer, for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement. + References No definition available. + Details
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- Definition The fair value of available-for-sale securities that serve as collateral for borrowings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5086-111524 + Details
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