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SEGMENT INFORMATION (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014 | Dec. 31, 2014
Information about reportable segments |  |  |  |  |
Net interest income | $ 62,363 | $ 61,394 | $ 183,431 | $ 182,672 |
Provision for loan losses | 1,906 | 1,747 | 3,120 | 4,647 |
Noninterest revenues | 31,386 | 31,072 | 90,151 | 89,092 |
Amortization of intangible assets | 843 | 1,051 | 2,642 | 3,293 |
Other operating expenses | 55,236 | 57,760 | 165,433 | 166,603 |
Income before income taxes | 35,764 | 31,908 | 102,387 | 97,221 |
Assets | 7,997,166 | 7,502,643 | 7,997,166 | 7,502,643 | $ 7,489,440
Goodwill | 375,174 | 375,174 | 375,174 | 375,174 | $ 375,174
Eliminations [Member] |  |  |  |  |
Information about reportable segments |  |  |  |  |
Net interest income | 0 | 0 | 0 | 0 |
Provision for loan losses | 0 | 0 | 0 | 0 |
Noninterest revenues | (526) | (486) | (1,462) | (1,365) |
Amortization of intangible assets | 0 | 0 | 0 | 0 |
Other operating expenses | (526) | (486) | (1,462) | (1,365) |
Income before income taxes | 0 | 0 | 0 | 0 |
Assets | (23,058) | (17,957) | (23,058) | (17,957) |
Goodwill | 0 | 0 | 0 | 0 |
Banking [Member] | Operating Segments [Member] |  |  |  |  |
Information about reportable segments |  |  |  |  |
Net interest income | 62,295 | 61,350 | 183,243 | 182,537 |
Provision for loan losses | 1,906 | 1,747 | 3,120 | 4,647 |
Noninterest revenues | 15,503 | 15,700 | 43,037 | 43,922 |
Amortization of intangible assets | 680 | 850 | 2,129 | 2,644 |
Other operating expenses | 43,790 | 46,837 | 131,002 | 133,680 |
Income before income taxes | 31,422 | 27,616 | 90,029 | 85,488 |
Assets | 7,970,345 | 7,476,030 | 7,970,345 | 7,476,030 |
Goodwill | 364,495 | 364,495 | 364,495 | 364,495 |
Employee Benefit Services [Member] | Operating Segments [Member] |  |  |  |  |
Information about reportable segments |  |  |  |  |
Net interest income | 37 | 21 | 102 | 67 |
Provision for loan losses | 0 | 0 | 0 | 0 |
Noninterest revenues | 11,674 | 11,049 | 34,633 | 32,434 |
Amortization of intangible assets | 125 | 153 | 391 | 496 |
Other operating expenses | 8,644 | 8,140 | 26,052 | 24,622 |
Income before income taxes | 2,942 | 2,777 | 8,292 | 7,383 |
Assets | 30,958 | 29,605 | 30,958 | 29,605 |
Goodwill | 8,019 | 8,019 | 8,019 | 8,019 |
Wealth Management [Member] | Operating Segments [Member] |  |  |  |  |
Information about reportable segments |  |  |  |  |
Net interest income | 31 | 23 | 86 | 68 |
Provision for loan losses | 0 | 0 | 0 | 0 |
Noninterest revenues | 4,735 | 4,809 | 13,943 | 14,101 |
Amortization of intangible assets | 38 | 48 | 122 | 153 |
Other operating expenses | 3,328 | 3,269 | 9,841 | 9,666 |
Income before income taxes | 1,400 | 1,515 | 4,066 | 4,350 |
Assets | 18,921 | 14,965 | 18,921 | 14,965 |
Goodwill | $ 2,660 | $ 2,660 | $ 2,660 | $ 2,660 |

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