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Selected Quarterly Financial Data (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract] |
Selected Quarterly Financial Data (Unaudited) | The following tables are a summary of certain quarterly financial data for the years ended December 31, 2017 and 2016.
| 2017 Quarters Ended
| March 31 |  | June 30 |  | September 30 |  | December 31
| (In thousands, except per share data)
Interest income | $ | 77,913 |  |  | 80,443 |  |  | 81,894 |  |  | 83,596 |
Interest expense | 10,878 |  |  | 11,388 |  |  | 11,682 |  |  | 11,696 |
Net interest income | 67,035 |  |  | 69,055 |  |  | 70,212 |  |  | 71,900 |
Provision for loan losses | 1,500 |  |  | 1,700 |  |  | 500 |  |  | 1,900 |
Net interest income after provision for loan losses | 65,535 |  |  | 67,355 |  |  | 69,712 |  |  | 70,000 |
Non-interest income | 12,465 |  |  | 14,819 |  |  | 15,112 |  |  | 13,301 |
Non-interest expense | 46,124 |  |  | 47,340 |  |  | 46,280 |  |  | 48,078 |
Income before income tax expense | 31,876 |  |  | 34,834 |  |  | 38,544 |  |  | 35,223 |
Income tax expense | 8,368 |  |  | 10,451 |  |  | 11,969 |  |  | 15,740 |
Net income | $ | 23,508 |  |  | 24,383 |  |  | 26,575 |  |  | 19,483 |
Basic earnings per share | $ | 0.37 |  |  | 0.38 |  |  | 0.41 |  |  | 0.30 |
Diluted earnings per share | $ | 0.37 |  |  | 0.38 |  |  | 0.41 |  |  | 0.30 |
| 2016 Quarters Ended
| March 31 |  | June 30 |  | September 30 |  | December 31
| (In thousands, except per share data)
Interest income | $ | 73,974 |  |  | 74,805 |  |  | 76,045 |  |  | 77,491 |
Interest expense | 10,905 |  |  | 10,895 |  |  | 11,074 |  |  | 10,874 |
Net interest income | 63,069 |  |  | 63,910 |  |  | 64,971 |  |  | 66,617 |
Provision for loan losses | 1,500 |  |  | 1,700 |  |  | 1,000 |  |  | 1,200 |
Net interest income after provision for loan losses | 61,569 |  |  | 62,210 |  |  | 63,971 |  |  | 65,417 |
Non-interest income | 13,018 |  |  | 13,824 |  |  | 14,066 |  |  | 14,485 |
Non-interest expense | 44,878 |  |  | 45,897 |  |  | 45,850 |  |  | 47,153 |
Income before income tax expense | 29,709 |  |  | 30,137 |  |  | 32,187 |  |  | 32,749 |
Income tax expense | 8,736 |  |  | 8,781 |  |  | 9,281 |  |  | 10,182 |
Net income | $ | 20,973 |  |  | 21,356 |  |  | 22,906 |  |  | 22,567 |
Basic earnings per share | $ | 0.33 |  |  | 0.34 |  |  | 0.36 |  |  | 0.35 |
Diluted earnings per share | $ | 0.33 |  |  | 0.34 |  |  | 0.36 |  |  | 0.35 |

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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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