Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets - Intangible Assets (Details)

v3.20.4
Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]    
Cost $ 244,364 $ 258,764
Accumulated Amortization (136,955) (125,564)
Accumulated Impairment Loss (3,814) (1,025)
Net Intangible Assets 103,595 132,175
Contract and customer-related    
Finite-Lived Intangible Assets [Line Items]    
Cost 213,194 227,594
Accumulated Amortization (110,917) (102,169)
Accumulated Impairment Loss (3,814) (1,025)
Net Intangible Assets 98,463 124,400
Acquired technologies    
Finite-Lived Intangible Assets [Line Items]    
Cost 12,400 12,400
Accumulated Amortization (10,787) (9,660)
Accumulated Impairment Loss 0 0
Net Intangible Assets 1,613 2,740
Trade names    
Finite-Lived Intangible Assets [Line Items]    
Cost 18,770 18,770
Accumulated Amortization (15,251) (13,735)
Accumulated Impairment Loss 0 0
Net Intangible Assets $ 3,519 $ 5,035