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Acquisitions (Details) (USD $)
In Thousands, unless otherwise specified |
9 Months Ended | ||
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Sep. 30, 2014
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Sep. 30, 2013
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Dec. 31, 2013
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| Business Acquisition [Line Items] | |||
| Acquisition of business, net of cash acquired | $ 1,144 | $ 0 | |
| Goodwill | 2,205,107 | 2,204,553 | |
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Agero, Inc. [Member]
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| Business Acquisition [Line Items] | |||
| Increase in goodwill due to adjustment | 554 | ||
| Acquisition of business, net of cash acquired | 1,144 | ||
| Goodwill | $ 390,016 | ||
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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