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Acquisition of a Business - Summary of Pro Forma Information for Results of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015
Business Combinations [Abstract] |  |
Total revenues (net interest income and non-interest income) | $ 171,059 | $ 151,054
Net income (loss) | $ 82,252 | $ (1,437)
Earnings per share—basic | $ 3.54 | $ (0.07)
Earnings per share—diluted | $ 3.50 | $ (0.07)

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- Definition The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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