Quarterly report pursuant to Section 13 or 15(d)

Business Combinations - Narrative (Details)

v3.10.0.1
Business Combinations - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 06, 2017
Sep. 30, 2017
Sep. 30, 2017
Sep. 30, 2018
Dec. 31, 2017
Business Acquisition [Line Items]          
Goodwill       $ 162,995 $ 172,998
Integra          
Business Acquisition [Line Items]          
Purchase price paid in cash to acquire entity $ 46,200        
Tangible assets 13,700        
Intangible assets $ 25,700        
Weighted average life of intangible assets 9 years        
Goodwill $ 8,100        
Net liabilities $ 1,300        
Pro forma revenue   $ 135,600 $ 407,100