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Summary of Significant Accounting Policies - Trade Accounts Receivable (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Trade Accounts Receivable    
Trade accounts receivable $ 69,245 $ 68,886
Unbilled accounts receivable 4,725 11,915
Trade and unbilled accounts receivable 73,970 80,801
Less allowance (246) (218)
Accounts receivable, net $ 73,724 $ 80,583