Annual report pursuant to Section 13 and 15(d)

Revenues - Disaggregated Revenue (Details)

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Revenues - Disaggregated Revenue (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disaggregation of Revenue [Line Items]      
Total revenues $ 730,056 $ 540,224 $ 647,554
Service      
Disaggregation of Revenue [Line Items]      
Total revenues 541,458 404,812 499,820
Surcharge      
Disaggregation of Revenue [Line Items]      
Total revenues $ 188,598 $ 135,412 $ 147,734