v3.19.1
Stockholders' Deficit - Additional Information (Detail)
3 Months Ended 12 Months Ended
Sep. 13, 2018
USD ($)
Party
$ / shares
shares
Aug. 17, 2018
Store
Aug. 15, 2018
USD ($)
Holder
$ / shares
shares
Jun. 01, 2018
USD ($)
$ / shares
shares
Mar. 12, 2018
USD ($)
shares
Mar. 09, 2018
$ / shares
Jan. 31, 2018
$ / shares
shares
Jan. 19, 2018
$ / shares
shares
Jan. 05, 2018
shares
Oct. 10, 2017
Aug. 03, 2017
USD ($)
$ / shares
shares
Aug. 02, 2017
$ / shares
shares
Sep. 30, 2018
USD ($)
shares
Jun. 30, 2018
USD ($)
Installment
shares
Dec. 31, 2018
USD ($)
$ / shares
shares
Dec. 31, 2017
USD ($)
Plan
shares
Jun. 30, 2015
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Preferred stock, shares authorized                             10,000,000    
Preferred stock, shares outstanding                             322,000    
Preferred stock, shares issued                             322,000    
Common stock, shares authorized                             150,000,000 50,000,000  
Common stock, shares outstanding                             7,792,918 5,781,000  
Warrants exercisable into shares of common stock       1,183,116     570,287                    
Exercise price of warrants, per share | $ / shares       $ 3.02     $ 9.15               $ 3.73    
Reverse stock split description           1-for-5 reverse stock split       1-for-5 reverse stock split              
Reverse stock split, conversion ratio           0.2       0.2              
Minimum bid price required for initial listing | $ / shares           $ 4.00                      
Share price, per share | $ / shares       $ 3.14                          
Net proceeds from sale of stock | $       $ 3,585,000                     $ 5,335,000 $ 4,641,000  
Promissory note principal amount | $                             9,117,000 $ 8,940,000  
Debt exchange conversion aggregate amount | $                             11,445,000    
Debt exchange conversion units             570,287                    
Loss on debt conversion | $                             $ 1,227,000    
Warrants exercised (in shares)                             233,000    
Warrants weighted average exercise price | $ / shares                             $ 11.38    
Shares issued for warrants exercise                             81,000    
Warrants outstanding                             5,348,601    
Warrants exercisable                             156,543    
Average exercise price of warrants exercisable, per share | $ / shares                             $ 11.02    
Number of equity incentive plans | Plan                               2  
Shares outstanding under equity incentive plans                             4,000 34,000  
Term of vesting schedule                             10 years    
Vested share exercised                             3 months    
Stock options granted under equity incentive plans                             0 0  
Aggregate intrinsic value in outstanding stock options | $                             $ 0    
Aggregate intrinsic value closing stock price | $ / shares                             $ 1.94    
Total value of restricted stock award | $                           $ 200,000      
Number of shares issued, value | $                             $ 5,335,000 $ 4,641,000  
Stock-based compensation | $                               $ 2,938,000  
Maximum [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Period of option granted vest                             3 years    
Minimum [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Period of option granted vest                             2 years    
2006 Equity Incentive Plan [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Shares outstanding under equity incentive plans                             2,000    
Common stock available for future issuance                             0    
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage                             100.00%    
2015 Equity Incentive Plan [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Shares outstanding under equity incentive plans                             2,000    
Common stock available for future issuance                             779,000    
Common stock authorized for issuance there-under                             775,000   48,230
2015 Equity Incentive Plan [Member] | Maximum [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Common stock available for future issuance                             38,347    
Restricted Stock Award [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Shares issued                         59,000        
Number of shares granted                           42,000      
Number of shares vested                           17,000      
Number of shares expected to vest                           25,000      
Number of equal vesting installments | Installment                           4      
Restricted Stock Award [Member] | Prepaid Assets [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Unrecognized compensation expense related to non-vested restricted stock award | $                             $ 30,000    
Common Stock [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Shares issued       885,346                     1,060,000 2,275,000  
Number of shares issued, value | $                         $ 260,000   $ 1,000 $ 1,000  
Stock-based compensation | $                             $ 430,000    
Preferred Stock [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Shares issued       297,770                     298,000    
Number of shares issued, value | $                               $ (1,000)  
Warrants [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Life of warrants, having cashless exercise feature       3 years                          
Warrants exercise lock-out period       6 months                          
Exchange [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Number of holders | Holder     21                            
Promissory note principal amount | $     $ 11,019,000                            
Promissory notes accrued interest | $     426,000                            
Debt exchange conversion aggregate amount | $ $ 1,023,000   11,445,000                            
Combined value of the stock and warrants | $ 1,123,000                                
Loss on debt conversion | $ $ 100,000                                
Number of parties | Party 3                                
Exchange [Member] | Restricted Stock Award [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Fair value of restricted stock estimated on the date of issuance | $     $ 8,280,000                            
Fair value assumption, discount rate     25.00%                            
Fair value assumption, risk-free interest rates     2.23%                            
Fair value assumption hold term     6 months                            
Fair value assumption, expected volatility     90.00%                            
Exchange [Member] | Common Stock [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Debt exchange conversion units 290,000   3,110,000                            
Debt exchange conversion price per unit | $ / shares $ 3.53   $ 3.68                            
Exchange [Member] | Warrants [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Exercise price of warrants, per share | $ / shares $ 3.41   $ 3.56                            
Each unit comprised of common stock and warrant to purchase number of common share 1   1                            
Warrants exercisable beginning date Mar. 13, 2019   Feb. 15, 2019                            
Warrants exercisable expiration date Sep. 13, 2021   Aug. 15, 2021                            
Fair value assumption, discount rate     25.00%                            
Fair value assumption, risk-free interest rates 2.68%   2.68%                            
Fair value assumption, expected volatility 90.00%   90.00%                            
Fair value of warrants estimated on the date of issuance | $ $ 384,000   $ 4,292,000                            
Fair value assumption,expected term 3 years   3 years                            
Combined value of the stock and warrants | $     $ 12,572,000                            
Loss on debt conversion | $     $ 1,227,000                            
Exchange [Member] | Warrants [Member] | Restricted Stock Award [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Fair value assumption, discount rate 25.00%                                
Fair value assumption, risk-free interest rates 2.23%                                
Fair value assumption, expected volatility 90.00%                                
Fair value of warrants estimated on the date of issuance | $ $ 739,000                                
Fair value assumption,expected term 6 months                                
Cooltech Holding Corp. ("Cooltech") [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Common stock, shares issued         675,656             100,000          
Common stock price, per share | $ / shares                       $ 10.00          
Warrants exercisable into shares of common stock         389,000     114,285       100,000          
Exercise price of warrants, per share | $ / shares               $ 9.15       $ 12.10          
Aggregate purchase price | $         $ 6,150,000                        
Life of warrants, having cashless exercise feature               3 years                  
Warrants exercisable beginning date               Jul. 19, 2018                  
Cooltech Holding Corp. ("Cooltech") [Member] | Dominican Republic [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Number of retail electronic stores acquired | Store   7                              
Cooltech Holding Corp. ("Cooltech") [Member] | Restricted Stock Award [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Common stock, shares issued                 625,000                
Cooltech Holding Corp. ("Cooltech") [Member] | Stock Purchase Agreement [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Stock purchase agreement date                     Aug. 03, 2017            
Common stock, shares issued                     175,000            
Common stock price, per share | $ / shares                     $ 10.00            
Warrants exercisable into shares of common stock                     175,000            
Exercise price of warrants, per share | $ / shares                     $ 12.10            
Aggregate purchase price | $                     $ 1,750,000            
Common shares issued in exchange of thier stock         1,111,000                        
Cooltech Holding Corp. ("Cooltech") [Member] | Stock Purchase Agreement [Member] | Private Placement [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Stock purchase agreement date         Aug. 03, 2017                        
Unitron Assets [Member] | Dominican Republic [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Number of common stock shares issued upon satisfaction of merger agreement                 625,000                
Number of retail electronic stores acquired | Store   7                              
Series A Convertible Preferred Stock [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Preferred stock, shares authorized                             10,000,000 10,000,000  
Preferred stock, shares outstanding                             322,000    
Percentage of outstanding shares authorized for issuance                             0.00% 0.00%  
Additional preferred shares issued       298,000                          
Preferred stock convertible into common stock                             739,000    
Series A Convertible Preferred Stock [Member] | Cooltech Holding Corp. ("Cooltech") [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Preferred stock, shares outstanding                               4,408,000  
Preferred stock, shares issued         763,000                        
Cooltech Holding Corp. ("Cooltech") [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Common stock, shares authorized                             110,000,000 40,000,000