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Accounts Receivable
 12 Months Ended
Dec. 31, 2021
Receivables [Abstract]  
Accounts Receivable Accounts Receivable
Accounts receivable, net, are comprised of the following amounts:
 As of December 31,
 20212020
Trade$72,771 $86,659 
Less—allowance for credit losses1,352 2,044 
Accounts receivable, net$71,419 $84,615 

The following table presents changes in allowance for credit losses.
Years Ended December 31,
202120202019
Balance at beginning of year$2,044 $2,044 $2,517 
Additions78 505 231 
Write-offs and other(734)(562)(692)
Currency impact(36)57 (12)
Balance at end of year$1,352 $2,044 $2,044 
As of December 31, 2021, no customer represented greater than 10% of consolidated accounts receivable. As of December 31, 2020, one customer represented 11% of consolidated accounts receivable, which is primarily related to Mobile Solutions.