Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies and Estimates (Details Textual)

v3.8.0.1
Summary of Significant Accounting Policies and Estimates (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Jan. 02, 2017
Significant Accounting Policies [Line Items]        
Advertising costs $ 160 $ 108 $ 25  
Reduction In Net Loss Attributable To Common Stock Holders   2,358    
Accounting Standards Update 2016-09 [Member]        
Significant Accounting Policies [Line Items]        
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets       $ 171
Medical Device [Member]        
Significant Accounting Policies [Line Items]        
Deferred Revenue, Revenue Recognized     6,517  
Cost of Revenue     $ 4,159  
Product Liability Accrual, Component Amount   212    
Customer Advances and Deposits, Current   911    
Reduction In Net Loss Attributable To Common Stock Holders   $ 2,358    
Reduction Percentage In Net Loss Attributable To Common Stock Holders   $ 0.13    
Sales Revenue, Net [Member]        
Significant Accounting Policies [Line Items]        
Concentration Risk, Percentage 10.00% 10.00%    
Customer One [Member] | Accounts Receivable [Member]        
Significant Accounting Policies [Line Items]        
Concentration Risk, Percentage 10.00% 18.00% 10.00%  
Customer One [Member] | Sales Revenue, Net [Member]        
Significant Accounting Policies [Line Items]        
Concentration Risk, Percentage     33.00%  
Customer Two [Member] | Accounts Receivable [Member]        
Significant Accounting Policies [Line Items]        
Concentration Risk, Percentage   16.00%    
Customer Three [Member] | Accounts Receivable [Member]        
Significant Accounting Policies [Line Items]        
Concentration Risk, Percentage   11.00%    
Customer Concentration Risk [Member] | Accounts Receivable [Member]        
Significant Accounting Policies [Line Items]        
Concentration Risk, Percentage 10.00%