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Accounts Receivable, net
9 Months Ended
Sep. 30, 2018
Receivables [Abstract]  
Accounts Receivable, net
Accounts Receivable, net
Accounts receivable, net, consists of the following: 
 
September 30,
2018
 
December 31,
2017
 
(in thousands)
Accounts receivable, gross
$
41,742

 
$
45,041

Less allowance for doubtful accounts
(1,334
)
 
(1,237
)
Total accounts receivable, net
$
40,408

 
$
43,804