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Goodwill (Tables) | 9 Months Ended
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Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract] |
Changes in Goodwill | The following table presents the changes in goodwill on our Consolidated Balance Sheets during the nine months ended September 30, 2014 (in thousands):
Goodwill as of December 31, 2013 | $ | 221,087 |
Increase in goodwill related to acquisitions | 33,826 |
Changes in previous estimates | 3,788 |
Net impairment and write-off related to divestitures | (1,197 | )
Goodwill as of September 30, 2014 | $ | 257,504 |

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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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