Quarterly report pursuant to Section 13 or 15(d)

Balance Sheet Detail (Details)

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Balance Sheet Detail (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Equipment and leasehold improvements      
Equipment and leasehold improvements, Gross $ 3,455   $ 3,323
Less accumulated depreciation and amortization (1,773)   (1,495)
Equipment and leasehold improvements, Net 1,682   1,828
Depreciation and amortization expense 358 $ 359  
Equipment      
Equipment and leasehold improvements      
Equipment and leasehold improvements, Gross 2,121   1,988
Leasehold improvements      
Equipment and leasehold improvements      
Equipment and leasehold improvements, Gross 1,334   $ 1,335
Selling, general and administrative expenses      
Equipment and leasehold improvements      
Depreciation and amortization expense $ 400 $ 400