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Selected Balance Sheet Components (Tables)
 12 Months Ended
Dec. 31, 2017
Selected Balance Sheet Components [Abstract]  
Accrued Expenses and Other Current Liabilities
At December 31, 2017 and 2016, accrued expenses and other current liabilities were comprised of the following (in thousands):

  
2017
  
2016
 
Accrued bonuses and payroll related expenses
 
$
636
  
$
549
 
Other accrued expenses
  
406
   
248
 
Accrued expenses and other current liabilities
 
$
1,042
  
$
797
 
Intangible Assets, Net
At December 31, 2017 and 2016, intangible assets were comprised of the following (in thousands):

  
2017
  
2016
 
Intangible assets
 
$
2,419
  
$
2,419
 
Accumulated amortization
  
(1,673
)
  
(1,431
)
Intangible assets, net
 
$
746
  
$
988
 
Equipment and Furniture, Net
At December 31, 2017 and 2016, equipment and furniture were comprised of the following (in thousands):

  
2017
  
2016
 
Equipment and furniture
 
$
1,479
  
$
1,007
 
Accumulated depreciation
  
(657
)
  
(319
)
Equipment and furniture, net
 
$
822
  
$
688