Quarterly report pursuant to Section 13 or 15(d)

Revenues (Details)

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Revenues (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Disaggregation of Revenue [Line Items]    
Total revenues $ 198,711 $ 149,557
Amortization of contract assets 1,091 882
Service    
Disaggregation of Revenue [Line Items]    
Total revenues 141,503 111,568
Surcharge    
Disaggregation of Revenue [Line Items]    
Total revenues $ 57,208 $ 37,989