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

The following table presents the components of accounts receivable:

 

 

 

December 31,

 

 

December 31,

 

 

 

2017

 

 

2016

 

 

 

(In thousands)

 

Gross accounts receivable

 

$

1,609

 

 

$

960

 

Allowance for uncollectible accounts

 

 

(73

)

 

 

(73

)

Total accounts receivable, net

 

$

1,536

 

 

$

887

 

Short-term portion

 

$

1,536

 

 

$

621

 

Long-term portion

 

 

—

 

 

 

266

 

Total accounts receivable

 

$

1,536

 

 

$

887