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Quarterly Results of Operations (Tables) | 12 Months Ended
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Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract] |
Summary of the unaudited quarterly results of operations | The following table sets forth a summary of the unaudited quarterly results of operations.
| First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
2017 |  |  |  |  |  |  |
Interest income | $ | 81,889 |  |  | $ | 87,579 |  |  | $ | 100,695 |  |  | $ | 104,587 |
Interest expense | 7,874 |  |  | 7,976 |  |  | 10,678 |  |  | 11,325 |
Net interest income | 74,015 |  |  | 79,603 |  |  | 90,017 |  |  | 93,262 |
Provision for loan losses | 1,500 |  |  | 1,750 |  |  | 2,150 |  |  | 2,150 |
Noninterest income | 32,021 |  |  | 34,265 |  |  | 33,413 |  |  | 32,441 |
Noninterest expense | 69,309 |  |  | 74,841 |  |  | 80,660 |  |  | 76,808 |
Income before income taxes | 35,227 |  |  | 37,277 |  |  | 40,620 |  |  | 46,745 |
Income taxes | 11,255 |  |  | 11,993 |  |  | 14,199 |  |  | 30,234 |
Net income | $ | 23,972 |  |  | $ | 25,284 |  |  | $ | 26,421 |  |  | $ | 16,511 |
Basic earnings per share | $ | 0.54 |  |  | $ | 0.57 |  |  | $ | 0.54 |  |  | $ | 0.33 |
Diluted earnings per share | $ | 0.54 |  |  | $ | 0.57 |  |  | $ | 0.53 |  |  | $ | 0.33 |
2016 |  |  |  |  |  |  |
Interest income | $ | 76,259 |  |  | $ | 84,008 |  |  | $ | 83,032 |  |  | $ | 85,840 |
Interest expense | 6,205 |  |  | 6,851 |  |  | 7,301 |  |  | 7,791 |
Net interest income | 70,054 |  |  | 77,157 |  |  | 75,731 |  |  | 78,049 |
Provision for loan losses | 1,800 |  |  | 1,430 |  |  | 2,650 |  |  | 1,650 |
Noninterest income | 33,302 |  |  | 35,586 |  |  | 38,272 |  |  | 30,255 |
Noninterest expense | 69,814 |  |  | 77,259 |  |  | 76,468 |  |  | 71,558 |
Income before income taxes | 31,742 |  |  | 34,054 |  |  | 34,885 |  |  | 35,096 |
Income taxes | 10,526 |  |  | 11,154 |  |  | 11,706 |  |  | 11,461 |
Net income | $ | 21,216 |  |  | $ | 22,900 |  |  | $ | 23,179 |  |  | $ | 23,635 |
Basic earnings per share | $ | 0.53 |  |  | $ | 0.54 |  |  | $ | 0.55 |  |  | $ | 0.56 |
Diluted earnings per share | $ | 0.52 |  |  | $ | 0.54 |  |  | $ | 0.55 |  |  | $ | 0.55 |

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=84173487&loc=d3e1280-108306 + Details
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