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Goodwill (Tables) | 12 Months Ended
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Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract] |
Activity in Goodwill | The following table sets forth the activity in goodwill from December 31, 2014, through December 31, 2016 (in thousands):
| Goodwill
| Temporary and consultant staffing |  | Permanent placement staffing |  | Risk consulting and internal audit services |  | Total
Balance as of December 31, 2014 | $ | 133,964 |  |  | $ | 26,450 |  |  | $ | 39,074 |  |  | $ | 199,488 |
Acquisitions (a) | — |  |  | — |  |  | 10,988 |  |  | 10,988 |
Foreign currency translation adjustments | (791 | ) |  | (199 | ) |  | (907 | ) |  | (1,897 | )
Balance as of December 31, 2015 | $ | 133,173 |  |  | $ | 26,251 |  |  | $ | 49,155 |  |  | $ | 208,579 |
Acquisitions | 1,248 |  |  | — |  |  | 299 |  |  | 1,547 |
Foreign currency translation adjustments | (546 | ) |  | (236 | ) |  | 449 |  |  | (333 | )
Balance as of December 31, 2016 | $ | 133,875 |  |  | $ | 26,015 |  |  | $ | 49,903 |  |  | $ | 209,793 |

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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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