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Accounts Receivable
 12 Months Ended
Dec. 31, 2019
Receivables [Abstract]  
Accounts Receivable Accounts Receivable
The Company’s accounts receivable included the following for the years ended December 31:
 
2019
 
2018
Accounts receivable, trade
$
142,181

 
$
146,056

Accounts receivable, other (a)
40,082

 
53,787

Allowance for doubtful accounts
(605
)
 
(559
)
Total accounts receivable, net
$
181,658

 
$
199,284

(a)
Accounts receivable, other consists primarily of value added/consumption taxes, government grants receivable and accrued billings due from government agencies.