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Receivables (Tables)
 9 Months Ended
Sep. 30, 2018
Receivables [Abstract]  
Schedule of Receivables
 
September 30, 2018
 
December 31, 2017
Accounts receivable
$
1,584

 
$
894

Less: allowance for doubtful accounts
(71
)
 
(71
)
Net trade receivables
1,513

 
823

Unbilled receivables
226

 
—

Miscellaneous receivables
229

 
218

Receivables, net
$
1,968

 
$
1,041