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Accounts Receivable, Net (Tables)
 12 Months Ended
Dec. 31, 2017
Accounts Receivable Net [Abstract]  
Accounts Receivable Lessen By Provision for Doubtful Receivables

 

 

 

 

 

 

 

 

 

 

  

December 31, 

2017

 

  

December 31, 

2016

 

Accounts receivable

  

$

         15,616

 

  

$

10,022

 

Less: Provision for doubtful accounts

  

 

(1,495)

 

  

 

—  

 

Accounts receivable, net

  

$

        14,121

 

  

$

10,022

 

 
Changes To Provisions For Doubtful Receivables

 

 

 

 

 

 

 

 

 

 

 

 

 

Allowance for doubtful receivables

Balance at
beginning of period

 

Charges to costs
and expenses

 

Amount utilized

 

Balance at

end of period

 

Year ended December 31, 2017

$— 

$(1,495)

$— 

$(1,495)

Year ended December 31, 2016

$— 

$— 

$— 

$— 

Year ended December 31, 2015

$(49)

$— 

$49 

$—