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Accounts Receivable, Net (Tables)
 9 Months Ended
Sep. 30, 2022
Receivables [Abstract]  
Schedule of Accounts Receivable, Net
Accounts receivable, net, at September 30, 2022 and December 31, 2021 was as follows (in thousands):

September 30,
2022		December 31,
2021
Trade accounts receivable$252,251 $190,710 
Unbilled revenue, at net realizable value167,083 67,616 
Total accounts receivable419,334 258,326 
Allowance for doubtful accounts(20,364)(16,158)
Accounts receivable, net$398,970 $242,168 
Schedule of Changes in the Allowance for Doubtful Accounts on Accounts Receivable
Changes to the allowance for doubtful accounts for the nine months ended September 30, 2022 and twelve months ended December 31, 2021 are as follows (in thousands):
September 30,
2022		December 31,
2021
Balance at beginning of period$(16,158)$(14,894)
Provision(9,796)(9,422)
Charge-offs, net of recoveries5,590 8,158 
Allowance for doubtful accounts$(20,364)$(16,158)