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Patents Future Amortization Expense for Intangible Assets (Details)
$ in Thousands
Jun. 30, 2016
USD ($)
Finite-Lived Intangible Assets [Line Items]  
For the remainder of 2016 $ 12,464
2017 23,312
2018 22,111
2019 19,412
2020 6,787
Thereafter 16,872
Total expected amortization expense $ 100,958