Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets - Schedule of Intangible Assets (Details)

v3.20.4
Goodwill and Intangible Assets - Schedule of Intangible Assets (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Schedule Of Intangible Assets [Line Items]    
Gross Carrying Amount $ 120,750 $ 120,750
Accumulated Amortization (120,406) (110,500)
Net Carrying Amount 344 10,250
Customer relationships    
Schedule Of Intangible Assets [Line Items]    
Gross Carrying Amount 120,000 120,000
Accumulated Amortization $ (120,000) (110,169)
Net Carrying Amount   $ 9,831
Weighted- Average Amortization Period (Years) 6 years 6 years
Licenses    
Schedule Of Intangible Assets [Line Items]    
Gross Carrying Amount $ 750 $ 750
Accumulated Amortization (406) (331)
Net Carrying Amount $ 344 $ 419
Weighted- Average Amortization Period (Years) 10 years 10 years