v3.19.2
Notes Payable - Additional Information (Detail)
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Aug. 15, 2018
USD ($)
Jan. 31, 2018
USD ($)
$ / shares
shares
May 31, 2019
USD ($)
$ / shares
shares
Apr. 30, 2019
USD ($)
Nov. 30, 2018
USD ($)
$ / shares
shares
Oct. 31, 2018
USD ($)
$ / shares
shares
Sep. 30, 2018
USD ($)
PromissoryNote
Aug. 31, 2018
USD ($)
Apr. 30, 2018
USD ($)
Aug. 31, 2017
USD ($)
Jun. 30, 2019
USD ($)
Jun. 30, 2018
USD ($)
Jun. 30, 2019
USD ($)
Jun. 30, 2018
USD ($)
Dec. 31, 2018
USD ($)
Debt Instrument [Line Items]                              
Notes payable, outstanding amount                     $ 11,806,000   $ 11,806,000   $ 9,117,000
Convertible notes converted into shares of common stock | shares   570,287                          
Warrants exercisable into shares of common stock | shares   570,287                          
Exercise price of warrants, per share | $ / shares   $ 9.15                          
Amortization of debt discount   $ 271,000                 1,561,000   1,561,000   1,780,000
Amortization period of interest expense   3 years                          
Loss on debt conversion                         9,000    
Accretion of discount                         (1,159,000) $ (135,000)  
Notes remaining balance paid                         811,000 904,000  
Convertible Notes and Warrants [Member]                              
Debt Instrument [Line Items]                              
Convertible notes term   3 years                          
Notes payable, interest rate   0.00%                          
Notes payable, outstanding amount $ 275,000                            
Convertible notes amount   $ 1,000,000                          
Warrants value   127,000                          
Conversion feature value   144,000                          
Debt value   $ 729,000                          
Aggregate principal amount of converted notes to common stock 725,000                            
Accretion of discount                     6,000   12,000    
Convertible Notes and Warrants [Member] | Interest Expense [Member]                              
Debt Instrument [Line Items]                              
Loss on debt conversion $ 163,000                            
Warrants [Member] | Valuation Technique, Option Pricing Model [Member] | Measurement Input, Price Volatility [Member]                              
Debt Instrument [Line Items]                              
Fair value assumption   105                          
Warrants [Member] | Valuation Technique, Option Pricing Model [Member] | Measurement Input, Risk Free Interest Rate [Member]                              
Debt Instrument [Line Items]                              
Fair value assumption   2.20                          
Warrants [Member] | Valuation Technique, Option Pricing Model [Member] | Measurement Input, Entity Credit Risk [Member]                              
Debt Instrument [Line Items]                              
Fair value assumption   7.70                          
Notes Payable [Member]                              
Debt Instrument [Line Items]                              
Interest expense                     $ 900,000 $ 325,000 $ 1,628,000 $ 572,000  
8% Secured Promissory Notes Due August 2018 [Member]                              
Debt Instrument [Line Items]                              
Notes payable, outstanding amount                             $ 250,000
8% Secured Promissory Notes Due August 2018 [Member] | Notes Payable [Member]                              
Debt Instrument [Line Items]                              
Notes payable, issued amount                   $ 250,000          
Convertible notes term                   1 year          
Notes payable, interest rate                   8.00% 8.00%   8.00%   8.00%
Notes payable, outstanding amount                   $ 250,000          
Notes payable, maturity date                         Aug. 31, 2018   Aug. 31, 2018
4.02% Promissory Note Due April 2021 [Member] | Notes Payable [Member]                              
Debt Instrument [Line Items]                              
Notes payable, issued amount                 $ 1,000,000   $ 704,000   $ 704,000    
Notes payable, interest rate                 4.02%            
Notes payable, maturity date                 Apr. 30, 2021            
Annual principal payments,2019                 $ 305,000            
Annual principal payments,2020                 359,000            
Annual principal payments,2021                 $ 183,000            
0% Promissory Note Due April 2019 [Member]                              
Debt Instrument [Line Items]                              
Notes payable, outstanding amount                             $ 418,000
0% Promissory Note Due April 2019 [Member] | Notes Payable [Member]                              
Debt Instrument [Line Items]                              
Notes payable, interest rate                     0.00%   0.00%   0.00%
Notes payable, maturity date                         Apr. 30, 2019   Apr. 30, 2019
0% Promissory Note Due April 2019 [Member] | Notes Payable [Member] | Unitron Assets [Member]                              
Debt Instrument [Line Items]                              
Notes payable, interest rate               0.00%              
Notes payable, maturity date               Apr. 30, 2019              
Assumption of debt under merger consideration               $ 868,000              
Notes remaining balance paid       $ 418,000                      
Notes payable, maturity date, description               $450,000 paid in October 2018 and $418,000 paid in April 2019              
0% Promissory Note Due October 2018 [Member] | Notes Payable [Member] | Unitron Assets [Member]                              
Debt Instrument [Line Items]                              
Notes payable, interest rate               0.00%              
Notes payable, maturity date               Oct. 31, 2018              
Notes remaining balance paid           $ 450,000                  
8% Promissory Note Due March 2021 [Member]                              
Debt Instrument [Line Items]                              
Notes payable, outstanding amount                     $ 2,107,000   $ 2,107,000   $ 2,107,000
8% Promissory Note Due March 2021 [Member] | Notes Payable [Member]                              
Debt Instrument [Line Items]                              
Notes payable, issued amount             $ 2,107,000                
Notes payable, interest rate             8.00%       8.00%   8.00%   8.00%
Notes payable, maturity date                         Mar. 31, 2021   Mar. 31, 2021
Number of promissory notes | PromissoryNote             12                
12% Convertible Notes Due October 2019 [Member]                              
Debt Instrument [Line Items]                              
Notes payable, outstanding amount                     $ 4,000,000   $ 4,000,000   $ 4,000,000
Convertible notes converted into shares of common stock | shares           941,181                  
Warrants exercisable into shares of common stock | shares           470,592                  
Exercise price of warrants, per share | $ / shares           $ 4.25                  
Amortization of debt discount           $ 1,942,000                  
Amortization period of interest expense           1 year                  
12% Convertible Notes Due October 2019 [Member] | Convertible Notes and Warrants [Member]                              
Debt Instrument [Line Items]                              
Convertible notes term           1 year                  
Notes payable, interest rate           12.00%                  
Convertible notes amount           $ 4,000,000                  
Warrants value           769,000                  
Conversion feature value           1,173,000                  
Debt value           $ 2,058,000                  
Accretion of discount                     $ 485,000   $ 971,000    
12% Convertible Notes Due October 2019 [Member] | Warrants [Member] | Valuation Technique, Option Pricing Model [Member] | Measurement Input, Price Volatility [Member]                              
Debt Instrument [Line Items]                              
Fair value assumption           90                  
12% Convertible Notes Due October 2019 [Member] | Warrants [Member] | Valuation Technique, Option Pricing Model [Member] | Measurement Input, Risk Free Interest Rate [Member]                              
Debt Instrument [Line Items]                              
Fair value assumption           2.47                  
12% Convertible Notes Due October 2019 [Member] | Warrants [Member] | Valuation Technique, Option Pricing Model [Member] | Measurement Input, Discount Rate [Member]                              
Debt Instrument [Line Items]                              
Fair value assumption           25                  
12% Convertible Notes Due October 2019 [Member] | Notes Payable [Member]                              
Debt Instrument [Line Items]                              
Notes payable, interest rate                     12.00%   12.00%   12.00%
Notes payable, maturity date                         Oct. 31, 2019   Oct. 31, 2019
12% Convertible Notes Due November 2019 [Member]                              
Debt Instrument [Line Items]                              
Notes payable, outstanding amount                     $ 1,220,000   $ 1,220,000   $ 1,220,000
Convertible notes converted into shares of common stock | shares         277,274                    
Warrants exercisable into shares of common stock | shares         138,638                    
Exercise price of warrants, per share | $ / shares         $ 4.40                    
Amortization of debt discount         $ 118,000                    
Amortization period of interest expense         1 year                    
12% Convertible Notes Due November 2019 [Member] | Convertible Notes and Warrants [Member]                              
Debt Instrument [Line Items]                              
Convertible notes term         1 year                    
Notes payable, interest rate         12.00%                    
Convertible notes amount         $ 1,220,000                    
Warrants value         118,000                    
Debt value         $ 1,102,000                    
Accretion of discount                     $ 29,000   $ 58,000    
12% Convertible Notes Due November 2019 [Member] | Warrants [Member] | Valuation Technique, Option Pricing Model [Member] | Measurement Input, Price Volatility [Member]                              
Debt Instrument [Line Items]                              
Fair value assumption         90                    
12% Convertible Notes Due November 2019 [Member] | Warrants [Member] | Valuation Technique, Option Pricing Model [Member] | Measurement Input, Risk Free Interest Rate [Member]                              
Debt Instrument [Line Items]                              
Fair value assumption         2.52                    
12% Convertible Notes Due November 2019 [Member] | Warrants [Member] | Valuation Technique, Option Pricing Model [Member] | Measurement Input, Discount Rate [Member]                              
Debt Instrument [Line Items]                              
Fair value assumption         25                    
12% Convertible Notes Due November 2019 [Member] | Notes Payable [Member]                              
Debt Instrument [Line Items]                              
Notes payable, interest rate                     12.00%   12.00%   12.00%
Notes payable, maturity date                         Nov. 30, 2019   Nov. 30, 2019
12% Convertible Notes Due May 2020 [Member]                              
Debt Instrument [Line Items]                              
Notes payable, outstanding amount                     $ 3,500,000   $ 3,500,000    
Convertible notes converted into shares of common stock | shares     1,258,996                        
Warrants exercisable into shares of common stock | shares     629,500                        
Exercise price of warrants, per share | $ / shares     $ 2.72                        
Amortization of debt discount     $ 940,000                        
Amortization period of interest expense     1 year                        
12% Convertible Notes Due May 2020 [Member] | Convertible Notes and Warrants [Member]                              
Debt Instrument [Line Items]                              
Convertible notes term     1 year                        
Notes payable, interest rate     12.00%                        
Convertible notes amount     $ 3,500,000                        
Warrants value     507,000                        
Conversion feature value     243,000                        
Debt value     2,750,000                        
Accretion of discount                     $ 117,000   $ 117,000    
Fundraising costs     $ 190,000                        
12% Convertible Notes Due May 2020 [Member] | Warrants [Member] | Valuation Technique, Option Pricing Model [Member] | Measurement Input, Price Volatility [Member]                              
Debt Instrument [Line Items]                              
Fair value assumption     105                        
12% Convertible Notes Due May 2020 [Member] | Warrants [Member] | Valuation Technique, Option Pricing Model [Member] | Measurement Input, Risk Free Interest Rate [Member]                              
Debt Instrument [Line Items]                              
Fair value assumption     2.33                        
12% Convertible Notes Due May 2020 [Member] | Warrants [Member] | Valuation Technique, Option Pricing Model [Member] | Measurement Input, Discount Rate [Member]                              
Debt Instrument [Line Items]                              
Fair value assumption     30                        
12% Convertible Notes Due May 2020 [Member] | Notes Payable [Member]                              
Debt Instrument [Line Items]                              
Notes payable, interest rate                     12.00%   12.00%   12.00%
Notes payable, maturity date                         May 31, 2020   May 31, 2020