Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details)

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Summary of Significant Accounting Policies (Details) - USD ($)
$ in Thousands
 9 Months Ended
Jan. 01, 2019
Sep. 30, 2019
Sep. 30, 2018
Right-of-use assets recorded   $ 3,786  
Lease liabilities recorded   $ 3,823  
Derecognition of capital lease assets $ 96    
Derecognition of capital lease liabilities 63    
Derecognition of deferred rent $ 70    
Anti-dilutive securities excluded from computation of net loss per share   1,629,475 2,931,360
Minimum      
Age of doubtful accounts   30 days  
Maximum      
Age of doubtful accounts   60 days