Quarterly report pursuant to Section 13 or 15(d)

Business Combinations - Goodwill (Details)

v3.10.0.1
Business Combinations - Goodwill (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Goodwill $ 1,362,747 $ 1,077,186
Goodwill expected to be deducted for income tax purposes 33,500  
2018 Acquisitions    
Goodwill $ 285,583