Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets - Narrative (Details)

v3.10.0.1
Intangible Assets - Narrative (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]    
Amortization of intangible assets $ 11,552 $ 16,142
Weighted-average amortization period 9 years 9 months 50 days