Annual report pursuant to Section 13 and 15(d)

Accrued liabilities (Tables)

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Accrued liabilities (Tables)
12 Months Ended
Dec. 31, 2017
Payables and Accruals [Abstract]  
Schedule of accrued liabilities

Accrued liabilities consist of the following (in thousands).

 

    December 31,  
    2017     2016  
             
Fixed asset related   $ 232     $ 1,330  
Payroll related     470       359  
Use tax accrual     75       156  
Professional services     88       29  
Estimated Interstate Battery settlement     600        
Other     336       101  
    $ 1,801     $ 1,975