v3.8.0.1

Acquisitions - Additional information (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 12 Months Ended
--- | --- | ---
Nov. 10, 2017 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Business Acquisition [Line Items] |  |  |  |
Deferred income tax asset, operating loss carry-forward and other tax attributes |  | $ 3,157 | $ 3,896 |
Community 1st Bancorp |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date | Nov. 10, 2017 |  |  |
Common stock issued in exchange for acquisition, shares | 2,955,623 |  |  |
Stock value per share, acquisition date | $ 17.55 |  |  |
Goodwill | $ 26,000 |  |  |
Deferred income tax asset, operating loss carry-forward and other tax attributes |  | $ 600 |  |
Business combination, value of deposit | $ 5,800 |  |  |
Finite-lived intangible asset, amortized period |  | 7 years |  |
Business combination, pro forma information, revenue of acquiree since acquisition date, actual |  | $ 1,400 |  |
Business combination, pro forma information, earnings or loss of acquiree since acquisition date, actual |  | $ 900 |  |
Pacific Rim Bank |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  | Jan. 01, 2017 | Jan. 01, 2016 | Jan. 01, 2015
Decrease in net income, pro forma adjustment |  | $ 500 | $ 700 | $ 300
Business combination, pro forma information, revenue of acquiree since acquisition date, actual |  |  |  | 2,500
Business combination, pro forma information, earnings or loss of acquiree since acquisition date, actual |  |  |  | $ 800

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- Definition Date when the business acquisition agreement was executed, in CCYY-MM-DD format. + References No definition available. + Details
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- Definition Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e845-128460 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e848-128460 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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