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ACCOUNTS RECEIVABLE
9 Months Ended
Sep. 30, 2021
Receivables [Abstract]  
ACCOUNTS RECEIVABLE ACCOUNTS RECEIVABLE, NET
Accounts receivable consisted of the following (amounts in thousands):
 September 30,
2021
December 31,
2020
Accounts receivable$265,015 $196,796 
Allowance for doubtful accounts(3,568)(3,782)
Accounts receivable, net$261,447 $193,014 
Accounts receivable are reduced by an allowance for doubtful accounts for estimated uncollectible accounts receivable, which is based upon historical experience and specific customer collection issues. Accounts are written off against the allowance account when they are determined to no longer be collectible.