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Goodwill (Tables) | 12 Months Ended
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Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract] |
Changes in Goodwill | The following table presents changes in goodwill in the accompanying Consolidated Balance Sheets for the years ended December 31, 2012 and 2013 (in thousands):
| December 31, 2012 |  | December 31, 2013
Goodwill at beginning of year | $ | 193,962 |  |  | $ | 218,442 |
Increase in goodwill related to acquisitions | 25,683 |  |  | 3,843 |
Impairments and changes in previous estimates | (1,118 | ) |  | (101 | )
Reclassification of assets held for sale | (85 | ) |  | — |
Decrease in goodwill due to divestitures | — |  |  | (1,097 | )
Goodwill at the end of the year | 218,442 |  |  | 221,087 |

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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=14024403&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=14024403&loc=d3e13854-109267 + Details
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