Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets - Narrative (Details)

v3.8.0.1
Intangible Assets - Narrative (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]    
Amortization of intangible assets $ 16,142 $ 15,501
Weighted-Average Estimated Useful Life (years) 8 years 10 months 21 days