Goodwill (Schedule of Changes in the Carrying Amount of Goodwill) (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
Dec. 31, 2015 |
Sep. 30, 2015 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
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| Goodwill [Abstract]. | |||||
| Goodwill as of January 1 | $ 1,323,502 | $ 1,195,900 | |||
| Goodwill impairment charges | $ (96,500) | $ (695,500) | (942,408) | (102,470) | |
| Goodwill acquired | 5,400 | 233,300 | |||
| Translation differences | (2,700) | (3,200) | |||
| Goodwill as of December 31 | $ 383,853 | $ 383,853 | $ 1,323,502 | $ 1,195,900 | |
| X | ||||||||||
- References No definition available.
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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 | ||||||||||
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of loss from the write-down 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 | ||||||||||
- Definition Amount of increase (decrease) from foreign currency translation adjustments 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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