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ACCOUNTS RECEIVABLE, NET (Tables)
12 Months Ended
Dec. 31, 2021
Receivables [Abstract]  
Schedule of accounts receivable, net
Accounts receivable, net consists of the following as of December 31:
(in thousands)20212020
Billed$17,907 $19,703 
Unbilled5,398 8,291 
23,305 27,994 
Less: Allowance for credit losses(5,297)(5,581)
Total$18,008 $22,413 
Changes in allowance for expected credit losses consist of the following:
Additions
(in thousands)Balance at Beginning of PeriodCharged to Expenses
Deductions Note (1)
Balance at End of Period
Allowance for expected credit losses:
Year ended December 31, 2021$5,581 $1,354 $1,638 $5,297 
Year ended December 31, 20204,472 2,229 1,120 5,581 
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(1)    Amounts written off as uncollectible or transferred to other accounts or utilized.