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Notes Payable (Details Narrative) - USD ($)
$ in Thousands
3 Months Ended
Mar. 28, 2019
Jan. 28, 2019
Dec. 06, 2018
Jun. 01, 2018
May 23, 2018
Mar. 19, 2018
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Convertible principal amount             $ 3,659   $ 3,199
VWAP percentage of common stock           20.00%      
Gain on extinguishment of debt             1,275  
Amortization of debt discount             1,091  
May 2018 Notes [Member]                  
Convertible principal amount         $ 840   500   400
Notes payable         $ 700        
Maturity date of notes         Mar. 23, 2019        
Debt instrument, description of event of default         Upon the occurrence of an event of default, the outstanding balance of the May 2018 Notes shall immediately increase to 120% of the outstanding balance immediately prior to the event of default and become immediately due and payable.        
June 2018 Note [Member]                  
Convertible principal amount       $ 3,600     $ 3,159   2,448
Notes payable       $ 3,000          
Maturity date of notes       Apr. 01, 2019          
Debt instrument, description of event of default       Upon the occurrence of an event of default, the outstanding balance of the June 2018 Note shall immediately increase to 120% of the outstanding balance immediately prior to the event of default and become immediately due and payable.          
December 2018 Note [Member]                  
Convertible principal amount     $ 598           $ 351
Notes payable     $ 500            
Maturity date of notes   Oct. 01, 2019 May 06, 2019            
Debt instrument accrued interest rate     8.00%            
VWAP percentage of common stock   70.00%              
Fees payable to borrower   $ 527              
May 2018 Notes [Member]                  
Maturity date of notes Jul. 15, 2019                
VWAP percentage of common stock 70.00%                
Fees payable to borrower $ 121