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Goodwill and Identifiable Assets (Tables) | 6 Months Ended
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Jun. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | The changes in the carrying amount of goodwill for the year ended December 31, 2013 and the six months ended June 30, 2014 were as follows (in thousands):
| Apex |  | Oxford |  | Physician |  | Life Sciences Europe |  | Healthcare |  | Total
Balance as of December 31, 2012 |  |  |  |  |  |  |  |  |  |  |
Gross goodwill | $ | 289,712 |  |  | $ | 150,619 |  |  | $ | 51,561 |  |  | $ | 3,753 |  |  | $ | 122,230 |  |  | $ | 617,875 |
Accumulated impairment | — |  |  | — |  |  | — |  |  | — |  |  | (121,717 | ) |  | (121,717 | )
| 289,712 |  |  | 150,619 |  |  | 51,561 |  |  | 3,753 |  |  | 513 |  |  | 496,158 |
Whitaker Acquisition (see Note 3) | — |  |  | — |  |  | 7,452 |  |  | — |  |  | — |  |  | 7,452 |
CyberCoders Acquisition (see Note 3) | — |  |  | 70,527 |  |  | — |  |  | — |  |  | — |  |  | 70,527 |
Divestiture - gross goodwill | — |  |  | — |  |  | — |  |  | — |  |  | (121,717 | ) |  | (121,717 | )
Divestiture - accumulated impairment | — |  |  | — |  |  | — |  |  | — |  |  | 121,717 |  |  | 121,717 |
Transfers | — |  |  | 513 |  |  | — |  |  | — |  |  | (513 | ) |  | — |
Translation adjustment | — |  |  | — |  |  | — |  |  | 811 |  |  | — |  |  | 811 |
Balance as of December 31, 2013 |  |  |  |  |  |  |  |  |  |  |
Gross goodwill | 289,712 |  |  | 221,659 |  |  | 59,013 |  |  | 4,564 |  |  | — |  |  | 574,948 |
Accumulated impairment | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
| 289,712 |  |  | 221,659 |  |  | 59,013 |  |  | 4,564 |  |  | — |  |  | 574,948 |
Acquisition accounting | — |  |  | 257 |  |  | (236 | ) |  | — |  |  | — |  |  | 21 |
Translation adjustment | — |  |  | — |  |  | — |  |  | (18 | ) |  | — |  |  | (18 | )
Balance as of June 30, 2014 |  |  |  |  |  |  |  |  |  |  |
Gross goodwill | 289,712 |  |  | 221,916 |  |  | 58,777 |  |  | 4,546 |  |  | — |  |  | 574,951 |
Accumulated impairment | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
| $ | 289,712 |  |  | $ | 221,916 |  |  | $ | 58,777 |  |  | $ | 4,546 |  |  | $ | — |  |  | $ | 574,951 |
Schedule of Acquired Intangible Assets | Company had the following acquired intangible assets (in thousands):
|  |  | As of June 30, 2014 |  | As of December 31, 2013
| Estimated Useful Life |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Intangible assets subject to amortization: |  |  |  |  |  |  |  |  |  |  |  |  |
Customer relations | 3 months – 10 years |  | $ | 109,999 |  |  | $ | 49,682 |  |  | $ | 60,317 |  |  | $ | 110,007 |  |  | $ | 41,564 |  |  | $ | 68,443 |
Contractor relations | 2 - 7 years |  | 43,595 |  |  | 33,074 |  |  | 10,521 |  |  | 43,598 |  |  | 30,737 |  |  | 12,861 |
Non-compete agreements | 2 - 7 years |  | 3,860 |  |  | 1,716 |  |  | 2,144 |  |  | 3,863 |  |  | 1,424 |  |  | 2,439 |
In-use software | 6 years |  | 18,900 |  |  | 1,839 |  |  | 17,061 |  |  | 18,900 |  |  | 263 |  |  | 18,637 |
|  |  | 176,354 |  |  | 86,311 |  |  | 90,043 |  |  | 176,368 |  |  | 73,988 |  |  | 102,380 |
Intangible assets not subject to amortization: |  |  |  |  |  |  |  |  |  |  |  |  |
Trademarks |  |  | 186,061 |  |  | — |  |  | 186,061 |  |  | 186,075 |  |  | — |  |  | 186,075 |
Goodwill |  |  | 574,951 |  |  | — |  |  | 574,951 |  |  | 574,948 |  |  | — |  |  | 574,948 |
Total |  |  | $ | 937,366 |  |  | $ | 86,311 |  |  | $ | 851,055 |  |  | $ | 937,391 |  |  | $ | 73,988 |  |  | $ | 863,403 |
Schedule of Estimated Future Amortization Expense | Estimated amortization for the remainder of this fiscal year, each of the next four fiscal years and thereafter follows (in thousands):
2014 | $ | 12,184 |
2015 | 21,323 |
2016 | 17,718 |
2017 | 12,886 |
2018 | 10,305 |
Thereafter | 15,627 |
| $ | 90,043 |

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