Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets - Change in Carrying Amount of Goodwill (Details)

v3.10.0.1
Goodwill and Intangible Assets - Change in Carrying Amount of Goodwill (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2018
USD ($)
Goodwill [Roll Forward]  
Beginning balance $ 751,052
Goodwill acquired 260,632
Measurement period adjustments (2,222)
Ending balance $ 1,009,462