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Debt (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Jul. 02, 2019
May 30, 2019
Sep. 19, 2018
Jun. 30, 2019
Aug. 31, 2018
Jun. 30, 2019
Jun. 28, 2019
Jun. 30, 2018
Dec. 31, 2018
Apr. 23, 2019
Jun. 30, 2016
Debt Instrument [Line Items]                      
Proceeds from advance notes         $ 900 $ 950   $ 400      
Percentage of accrued interest         7.00%            
Common stock conversion price   $ 0.45                  
Intrinsic value of this beneficial conversion feature       $ 143   142        
Proceeds from convertible debt           1,275        
Issuance of common stock upon note conversions shares   2,179,622                  
Advance Notes [Member]                      
Debt Instrument [Line Items]                      
Proceeds from advance notes           $ 1,700          
2019 Bridge Notes [Member]                      
Debt Instrument [Line Items]                      
Term loan interest rate           7.00%          
Debt instrument amount             $ 1,700        
Maturity Date           Oct. 01, 2019          
2019 Bridge Notes [Member] | Subsequent Event [Member]                      
Debt Instrument [Line Items]                      
Proceeds from advance notes $ 750                    
2019 Bridge Notes [Member] | Advance Notes [Member]                      
Debt Instrument [Line Items]                      
Proceeds from advance notes             950        
2019 Bridge Notes [Member] | Nomis Bay LTD [Member]                      
Debt Instrument [Line Items]                      
Debt instrument amount             750        
2019 Bridge Notes [Member] | Cameron Durrant [Member]                      
Debt Instrument [Line Items]                      
Debt instrument amount             750        
2019 Bridge Notes [Member] | Chief Executive Officer [Member]                      
Debt Instrument [Line Items]                      
Debt instrument amount             $ 200        
2019 Bridge Notes [Member] | Bona Fide Financing Transaction [Member]                      
Debt Instrument [Line Items]                      
Proceeds from advance notes           $ 3,000          
Black Horse Capital, L.P [Member] | Convertible Promissory Note [Member]                      
Debt Instrument [Line Items]                      
Term loan interest rate     7.00%                
Debt instrument amount     $ 2,500                
2018 Convertible Notes Payable [Member] | Qualified Financing [Member]                      
Debt Instrument [Line Items]                      
Proceeds from convertible debt           $ 10,000          
Conversion price       $ 0.45   $ 0.45          
2018 Convertible Notes Payable [Member] | Non Qualified Financing [Member]                      
Debt Instrument [Line Items]                      
Proceeds from convertible debt           $ 10,000          
Conversion price       0.45   $ 0.45          
2018 Convertible Notes Payable [Member] | Advance Notes [Member]                      
Debt Instrument [Line Items]                      
Common stock conversion price           $ 0.45          
Intrinsic value of this beneficial conversion feature           $ 1,800          
Debt discount amortization           $ 200          
Remaining Discount Amortization Period           12 months          
2019 Convertible Notes Payable [Member]                      
Debt Instrument [Line Items]                      
Term loan interest rate           7.50%          
Debt instrument amount                   $ 1,300  
2019 Convertible Notes Payable [Member] | Qualified Financing [Member]                      
Debt Instrument [Line Items]                      
Proceeds from convertible debt           $ 10,000          
Conversion price       1.25   $ 1.25          
2019 Convertible Notes Payable [Member] | Non Qualified Financing [Member]                      
Debt Instrument [Line Items]                      
Proceeds from convertible debt           $ 10,000          
Conversion price       $ 1.25   $ 1.25          
2019 Convertible Notes Payable [Member] | Advance Notes [Member]                      
Debt Instrument [Line Items]                      
Common stock conversion price           $ 1.25          
Intrinsic value of this beneficial conversion feature           $ 1,800          
Debt discount amortization           $ 400          
Remaining Discount Amortization Period           22 months          
Notes Payable To Vendors [Member]                      
Debt Instrument [Line Items]                      
Interest rate                     10.00%
Notes payable to vendors                     $ 1,200
Accrued interest           $ 400     $ 300    
Notes Payable To Vendors [Member] | 2019 Bridge Notes [Member]                      
Debt Instrument [Line Items]                      
Accrued interest           $ 1,100          
Debt instrument amount                     $ 500