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Goodwill and Other Intangible Assets, Net (Tables) | 12 Months Ended
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Dec. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract] |
Changes in Carrying Amount of Goodwill by Operating Segment | A summary of changes in the carrying amount of goodwill by operating segment for the years ended December 31, 2016 and 2015 were as follows (in thousands):
|  | Financial Services |  |  | Benefits and Insurance Services |  |  | National Practices |  |  | Total Goodwill |
December 31, 2014 |  | $ | 268,630 |  |  | $ | 164,935 |  |  | $ | 1,666 |  |  | $ | 435,231 |
Additions |  |  | 409 |  |  |  | 13,599 |  |  |  | — |  |  |  | 14,008 |
Divestitures |  |  | (1,554 | ) |  |  | — |  |  |  | — |  |  |  | (1,554 | )
December 31, 2015 |  | $ | 267,485 |  |  | $ | 178,534 |  |  | $ | 1,666 |  |  | $ | 447,685 |
Additions |  |  | 3,845 |  |  |  | 35,954 |  |  |  | — |  |  |  | 39,799 |
Divestitures |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
December 31, 2016 |  | $ | 271,330 |  |  | $ | 214,488 |  |  | $ | 1,666 |  |  | $ | 487,484 |
Components of Goodwill and Other Intangible Assets, Net | The components of goodwill and other intangible assets, net at December 31, 2016 and 2015 were as follows (in thousands):
|  | 2016 |  |  | 2015 |
Goodwill |  | $ | 487,484 |  |  | $ | 447,685 |
Intangibles : |  |  |  |  |  |  |  |
Client lists |  |  | 172,343 |  |  |  | 147,706 |
Other intangibles |  |  | 7,994 |  |  |  | 6,977 |
Total intangibles |  |  | 180,337 |  |  |  | 154,683 |
Total goodwill and other intangibles assets |  |  | 667,821 |  |  |  | 602,368 |
Accumulated amortization: |  |  |  |  |  |  |  |
Client lists |  |  | (80,560 | ) |  |  | (65,037 | )
Other intangibles |  |  | (2,860 | ) |  |  | (1,678 | )
Total accumulated amortization |  |  | (83,420 | ) |  |  | (66,715 | )
Goodwill and other intangible assets, net |  | $ | 584,401 |  |  | $ | 535,653 |

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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