Annual report pursuant to Section 13 and 15(d)

Revenue and Direct Expense (Cost of Revenues) (Details)

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Revenue and Direct Expense (Cost of Revenues) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disaggregation of Revenue [Line Items]      
Direct expense $ 473,038 $ 470,424 $ 423,723
Asset-based      
Disaggregation of Revenue [Line Items]      
Direct expense 434,123 430,345 393,717
Subscription-based      
Disaggregation of Revenue [Line Items]      
Direct expense 30,814 32,577 29,445
Professional services and other revenue      
Disaggregation of Revenue [Line Items]      
Direct expense $ 8,101 $ 7,502 $ 561