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Acquisition - PCI and Non-PCI Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Nov. 21, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | --- | --- | --- | ---
PCI loans |  |  |  |  |
Less: interest component of cash flows expected to be collected (accretable yield) | $ 1,254 |  | $ 1,476 | $ 2,618 | $ 4,027
Bank of Napa, N.A. (Napa) |  |  |  |  |
Non-PCI loans |  |  |  |  |
Contractually required payments including interest |  | $ 183,833 |  |  |
Contractual cash flows not expected to be collected |  | 14,227 |  |  |
Fair value of non-PCI loans |  | 133,865 |  |  |
Bank of Napa, N.A. (Napa) | Receivables Acquired with Deteriorated Credit Quality |  |  |  |  |
PCI loans |  |  |  |  |
Contractually required payments including interest |  | 1,769 |  |  |
Less: contractual cash flows not expected to be collected (nonaccretable difference) |  | 805 |  |  |
Cash flows expected to be collected (undiscounted) |  | 964 |  |  |
Less: interest component of cash flows expected to be collected (accretable yield) |  | 109 |  |  |
Fair value of PCI loans |  | $ 855 |  |  |

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- Definition The amount of the loan's contractually required payments receivable in excess of the amount of its cash flows expected to be collected. This relates to loans with deteriorating of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References No definition available. + Details
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- Definition Amount of the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82894507&loc=d3e13503-111538 + Details
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