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6. Intangible Assets and Goodwill (Details 1)
$ in Thousands
Sep. 30, 2015
USD ($)
Estimated amortization expense related to intangible assets  
2015 (October - December) $ 24,613
2016 95,879
2017 94,211
2018 28,582
2019 17,778
2020 4,245
Thereafter 12,540
Total $ 277,848