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Accounts Receivable
12 Months Ended
Dec. 31, 2022
Receivables [Abstract]  
Accounts Receivable Accounts Receivable
Accounts receivable includes the following amount at December 31, 2022 and 2021:
December 31,
(in thousands)20222021
Trade accounts receivable$21,665 $15,991 
Unbilled receivables4,621 3,677 
Other receivables747 1,355 
Total receivables27,033 21,023 
Allowance for credit losses(467)(39)
Reserve for estimated credits(320)(163)
$26,246 $20,821 

The Company charged $0.1 million to credit loss expense for the year ended December 31, 2022. The Company charged $0.1 million to credit loss expense and relieved the allowance for credit losses balance in the amount of $0.4 million for the year ended December 31, 2021 for a total allowance for credit losses balance of less than $0.1 million as of December 31, 2021.