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Accounts Receivable
 9 Months Ended
Sep. 30, 2025
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]  
Accounts Receivable Accounts Receivable
Net accounts receivable consisted of the following as of September 30, 2025 and December 31, 2024 (in thousands):
 
September 30,
2025		December 31,
2024
Trade accounts receivable$546,945 $508,928 
Unbilled accounts receivable224,715 222,281 
Gross accounts receivable771,660 731,209 
Allowances for current expected credit losses and other reserves(5,769)(3,522)
Accounts receivable, net$765,891 $727,687 

A summary of activity in the accounts receivable allowance for current expected credit losses and other reserves for the nine months ended September 30, 2025 and 2024 was as follows (in thousands):

September 30,
2025		September 30,
2024
Beginning balance$3,522 $3,469 
Charges to income from operations10,323 4,832 
Collections from customers previously reserved and other(8,076)(4,481)
Ending balance$5,769 $3,820 

Charges to income from operations primarily represents charges to provision for doubtful accounts for increases in the allowance for current expected credit losses.