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Accounts Receivable (Tables)
 12 Months Ended
Dec. 31, 2017
Receivables [Abstract]  
Schedule of Accounts Receivable

Components of accounts receivable, net are as follows (in thousands):

 

 

 

December 31,

 

 

 

2017

 

 

2016

 

Accounts receivable

 

$

 

47,017

 

 

$

 

15,915

 

Allowance for doubtful accounts

 

 

 

(1,220

)

 

 

 

(1,221

)

Total

 

$

 

45,797

 

 

$

 

14,694