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SEGMENT INFORMATION (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014 | Dec. 31, 2014
Information about reportable segments |  |  |  |  |
Net interest income | $ 61,228 | $ 61,170 | $ 121,068 | $ 121,279 |
Provision for loan losses | 591 | 1,900 | 1,214 | 2,900 |
Noninterest revenues | 29,719 | 29,666 | 58,765 | 58,020 |
Amortization of intangible assets | 880 | 1,101 | 1,799 | 2,242 |
Other operating expenses | 55,168 | 54,063 | 110,197 | 108,844 |
Income before income taxes | 34,308 | 33,772 | 66,623 | 65,313 |
Assets | 7,908,771 | 7,461,343 | 7,908,771 | 7,461,343 | $ 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 | (472) | (418) | (936) | (880) |
Amortization of intangible assets | 0 | 0 | 0 | 0 |
Other operating expenses | (472) | (418) | (936) | (880) |
Income before income taxes | 0 | 0 | 0 | 0 |
Assets | (24,783) | (15,639) | (24,783) | (15,639) |
Goodwill | 0 | 0 | 0 | 0 |
Banking [Member] | Operating Segments [Member] |  |  |  |  |
Information about reportable segments |  |  |  |  |
Net interest income | 61,165 | 61,124 | 120,948 | 121,188 |
Provision for loan losses | 591 | 1,900 | 1,214 | 2,900 |
Noninterest revenues | 14,009 | 14,778 | 27,534 | 28,223 |
Amortization of intangible assets | 709 | 882 | 1,448 | 1,795 |
Other operating expenses | 43,393 | 43,132 | 87,212 | 86,844 |
Income before income taxes | 30,481 | 29,988 | 58,608 | 57,872 |
Assets | 7,882,898 | 7,435,282 | 7,882,898 | 7,435,282 |
Goodwill | 364,495 | 364,495 | 364,495 | 364,495 |
Employee Benefit Services [Member] | Operating Segments [Member] |  |  |  |  |
Information about reportable segments |  |  |  |  |
Net interest income | 35 | 23 | 65 | 46 |
Provision for loan losses | 0 | 0 | 0 | 0 |
Noninterest revenues | 11,606 | 10,677 | 22,959 | 21,386 |
Amortization of intangible assets | 133 | 171 | 266 | 342 |
Other operating expenses | 8,957 | 8,198 | 17,408 | 16,482 |
Income before income taxes | 2,551 | 2,331 | 5,350 | 4,608 |
Assets | 33,609 | 27,818 | 33,609 | 27,818 |
Goodwill | 8,019 | 8,019 | 8,019 | 8,019 |
Wealth Management [Member] | Operating Segments [Member] |  |  |  |  |
Information about reportable segments |  |  |  |  |
Net interest income | 28 | 23 | 55 | 45 |
Provision for loan losses | 0 | 0 | 0 | 0 |
Noninterest revenues | 4,576 | 4,629 | 9,208 | 9,291 |
Amortization of intangible assets | 38 | 48 | 85 | 105 |
Other operating expenses | 3,290 | 3,151 | 6,513 | 6,398 |
Income before income taxes | 1,276 | 1,453 | 2,665 | 2,833 |
Assets | 17,047 | 13,882 | 17,047 | 13,882 |
Goodwill | $ 2,660 | $ 2,660 | $ 2,660 | $ 2,660 |

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