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Accounts Receivable, Net
3 Months Ended
Mar. 31, 2023
Accounts Receivable, after Allowance for Credit Loss [Abstract]  
Accounts Receivable, Net ACCOUNTS RECEIVABLE, NET
Accounts receivable, net consisted of the following:
 March 31,
2023
December 31,
2022
In thousands  
Trade receivables$41,989 $31,126 
U.S. Government contracts:
Billed15,576 14,150 
Cost and accrued profit - not billed1,588 661 
Commercial and other government contracts
Billed42,615 41,520 
Cost and accrued profit - not billed2,268 2,268 
Less allowance for doubtful accounts(2,744)(2,066)
Accounts receivable, net$101,292 $87,659 

The Company performs ongoing evaluations of its customers’ current creditworthiness, as determined by the review of their credit information, to determine if events have occurred subsequent to the recognition of revenue and the related receivable that provide evidence that such receivable will be realized in an amount less than that recognized at the time of sale. Estimates of credit losses are based on historical losses, current economic conditions, geographic considerations, and in some cases, evaluating specific customer accounts for risk of loss.

The following table summarizes the activity in the allowance for doubtful accounts in the three-month fiscal period ended March 31, 2023:
In thousands 
Balance at December 31, 2022
$(2,066)
Provision(805)
Amounts written off57 
Recoveries71 
Changes in foreign currency exchange rates(1)
Balance at March 31, 2023
$(2,744)

There were no amounts included in accounts receivable, net for matters such as contract changes, negotiated settlements and claims for unanticipated contract costs at March 31, 2023 and December 31, 2022.