Accrued Liabilities (Tables)
 12 Months Ended
Dec. 31, 2015
Payables and Accruals [Abstract]  
Accrued liabilities

Accrued liabilities are as follows:

 

         
    Years Ended December 31,
    2015   2014
Professional fees $ 647 $ 940
Accrued compensation   1,027   1,151
Other taxes payable   363   597
Accrued lease obligations   852   429
Accrued expenses   710   519
Other   637   288
Total $ 4,236 $ 3,924