Annual report pursuant to Section 13 and 15(d)

Business Combinations - Intangibles (Details)

v3.10.0.1
Business Combinations - Intangibles (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
2018 Acquisitions    
Estimates of acquired intangible assets    
Estimated Fair Value $ 181,340  
Weighted Average Estimated Useful Life (Years) 11 years  
2018 Acquisitions | Customer relationships    
Estimates of acquired intangible assets    
Estimated Fair Value $ 168,820  
Weighted Average Estimated Useful Life (Years) 12 years  
2018 Acquisitions | Trademarks and trade names    
Estimates of acquired intangible assets    
Estimated Fair Value $ 11,260  
Weighted Average Estimated Useful Life (Years) 9 years  
2018 Acquisitions | Non-Compete    
Estimates of acquired intangible assets    
Estimated Fair Value $ 1,260  
Weighted Average Estimated Useful Life (Years) 5 years  
2017 Acquisitions    
Estimates of acquired intangible assets    
Estimated Fair Value $ 33,580 $ 33,580
Weighted Average Estimated Useful Life (Years) 9 years  
2017 Acquisitions | Customer relationships    
Estimates of acquired intangible assets    
Estimated Fair Value $ 26,170  
Weighted Average Estimated Useful Life (Years) 10 years  
2017 Acquisitions | Trademarks and trade names    
Estimates of acquired intangible assets    
Estimated Fair Value $ 1,780  
Weighted Average Estimated Useful Life (Years) 10 years  
2017 Acquisitions | Non-Compete    
Estimates of acquired intangible assets    
Estimated Fair Value $ 5,630  
Weighted Average Estimated Useful Life (Years) 5 years