Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets (Intangible Assets Subject to Amortization) (Details)

v3.10.0.1
Goodwill and Intangible Assets (Intangible Assets Subject to Amortization) (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross $ 531,026  
Less accumulated amortization (95,020)  
Net other intangible assets 436,006 $ 4,237
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross 408,267  
Less accumulated amortization (55,417)  
Net other intangible assets 352,850  
Other amortizable intangibles    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross 122,759  
Less accumulated amortization (39,603)  
Net other intangible assets $ 83,156