Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets (Details)

v3.19.3
Intangible Assets (Details) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2019
Dec. 31, 2018
Schedule Of Intangible Assets [Line Items]    
Gross Carrying Amount $ 120,750 $ 123,368
Accumulated Amortization (105,878) (94,630)
Net Carrying Amount 14,872 28,738
Customer relationships    
Schedule Of Intangible Assets [Line Items]    
Gross Carrying Amount 120,000 120,000
Accumulated Amortization (105,566) (91,756)
Net Carrying Amount $ 14,434 $ 28,244
Weighted- Average Amortization Period (Years) 6 years 6 years
Licenses    
Schedule Of Intangible Assets [Line Items]    
Gross Carrying Amount $ 750 $ 3,368
Accumulated Amortization (312) (2,874)
Net Carrying Amount $ 438 $ 494
Weighted- Average Amortization Period (Years) 10 years 5 years 7 months 6 days