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Purchased Intangible Assets and Goodwill (Future Estimated Amortization Expense of Definite Life Intangible Assets) (Details)
$ in Thousands
Dec. 31, 2015
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2016 $ 1,036
2017 1,036
2018 1,036
2019 556
2020 $ 150