Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangibles Assets (Details 3)

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Goodwill and Intangibles Assets (Details 3) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Finite-lived Intangible Assets [Roll Forward]        
Balance as of December 31, 2017     $ 310,645  
Amortization $ (17,014) $ (14,660) (34,028) $ (19,362)
Balance as of June 30, 2018 $ 276,617   $ 276,617