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Quarterly Financial Data (Unaudited) | 12 Months Ended
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Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Financial Data (unaudited) | QUARTERLY FINANCIAL DATA (UNAUDITED) Summarized unaudited quarterly financial data follows for the three months ended:
| 2018 Quarter Ended,
| March 31 |  | June 30 |  | September 30 |  | December 31
| (Dollars in thousands, except per share data)
Interest income | $ | 150,410 |  |  | $ | 159,910 |  |  | $ | 167,826 |  |  | $ | 172,026 |
Interest expense | 30,342 |  |  | 37,091 |  |  | 44,679 |  |  | 50,133 |
Net interest income before provision for loan losses | 120,068 |  |  | 122,819 |  |  | 123,147 |  |  | 121,893 |
Provision for loan losses | 2,500 |  |  | 2,300 |  |  | 7,300 |  |  | 2,800 |
Net interest income after provision for loan losses | 117,568 |  |  | 120,519 |  |  | 115,847 |  |  | 119,093 |
Noninterest income | 19,850 |  |  | 15,269 |  |  | 13,447 |  |  | 11,614 |
Noninterest expense | 68,453 |  |  | 71,629 |  |  | 67,455 |  |  | 70,189 |
Income before income tax provision | 68,965 |  |  | 64,159 |  |  | 61,839 |  |  | 60,518 |
Income tax provision | 17,733 |  |  | 16,629 |  |  | 15,461 |  |  | 16,069 |
Net income | $ | 51,232 |  |  | $ | 47,530 |  |  | $ | 46,378 |  |  | $ | 44,449 |
Basic earnings per common share | $ | 0.38 |  |  | $ | 0.36 |  |  | $ | 0.36 |  |  | $ | 0.35 |
Diluted earnings per common share | $ | 0.38 |  |  | $ | 0.36 |  |  | $ | 0.36 |  |  | $ | 0.35 |
| 2017 Quarter Ended,
| March 31 |  | June 30 |  | September 30 |  | December 31
| (Dollars in thousands, except per share data)
Interest income | $ | 132,743 |  |  | $ | 138,533 |  |  | $ | 147,643 |  |  | $ | 153,185 |
Interest expense | 17,838 |  |  | 21,713 |  |  | 24,380 |  |  | 26,793 |
Net interest income before provision for loan losses | 114,905 |  |  | 116,820 |  |  | 123,263 |  |  | 126,392 |
Provision for loan losses | 5,600 |  |  | 2,760 |  |  | 5,400 |  |  | 3,600 |
Net interest income after provision for loan losses | 109,305 |  |  | 114,060 |  |  | 117,863 |  |  | 122,792 |
Noninterest income | 17,603 |  |  | 16,115 |  |  | 16,246 |  |  | 16,451 |
Noninterest expense | 67,699 |  |  | 64,037 |  |  | 61,837 |  |  | 73,028 |
Income before income tax provision | 59,209 |  |  | 66,138 |  |  | 72,272 |  |  | 66,215 |
Income tax provision | 22,999 |  |  | 25,451 |  |  | 27,708 |  |  | 48,231 |
Net income | $ | 36,210 |  |  | $ | 40,687 |  |  | $ | 44,564 |  |  | $ | 17,984 |
Basic earnings per common share | $ | 0.27 |  |  | $ | 0.30 |  |  | $ | 0.33 |  |  | $ | 0.13 |
Diluted earnings per common share | $ | 0.27 |  |  | $ | 0.30 |  |  | $ | 0.33 |  |  | $ | 0.13 |

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- References No definition available. + Details
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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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Namespace Prefix: | us-gaap_
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