v3.20.4
Goodwill and intangible assets - Carrying Amount (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Intangible assets      
Historical Cost $ 33,012 $ 36,413  
Accumulated Amortization (22,360) (21,473)  
Net 10,652 14,940 $ 19,152
Venue contracts      
Intangible assets      
Historical Cost 19,710 20,431  
Accumulated Amortization (16,030) (15,247)  
Net 3,680 5,184  
Backlog      
Intangible assets      
Historical Cost 7,388 7,388  
Accumulated Amortization (3,578) (2,104)  
Net 3,810 5,284  
Customer and partner relationships      
Intangible assets      
Historical Cost 3,780 3,780  
Accumulated Amortization (962) (584)  
Net 2,818 3,196  
Non-compete agreements, technology and other      
Intangible assets      
Historical Cost 2,134 4,814  
Accumulated Amortization (1,790) (3,538)  
Net $ 344 $ 1,276