v3.20.1
Merger with Cooltech - Additional Information (Detail)
 1 Months Ended 12 Months Ended
Mar. 31, 2018
Mar. 12, 2018
USD ($)
$ / shares
shares
Mar. 09, 2018
$ / shares
Jan. 31, 2018
$ / shares
shares
Jan. 19, 2018
USD ($)
$ / shares
shares
Jan. 05, 2018
USD ($)
shares
Oct. 10, 2017
Aug. 03, 2017
USD ($)
$ / shares
shares
Aug. 02, 2017
$ / shares
shares
Jul. 25, 2017
shares
Dec. 31, 2017
shares
Dec. 31, 2019
Dec. 31, 2018
USD ($)
$ / shares
Jun. 01, 2018
$ / shares
shares
Business Acquisition [Line Items]                            
Warrants exercisable into shares of common stock       570,287                   1,183,116
Exercise price of warrants, per share | $ / shares       $ 9.15                 $ 3.73 $ 3.02
Reverse stock split description 1-for-5 reverse stock split   1-for-5 reverse stock split       1-for-5 reverse stock split              
Reverse stock split, conversion ratio 0.2   0.2       0.2              
Convertible notes converted into shares of common stock       570,287                    
Minimum bid price required for initial listing | $ / shares     $ 4.00                      
Cooltech Holding Corp. [Member]                            
Business Acquisition [Line Items]                            
Merger closing date                       Mar. 12, 2018    
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                        
Shares for consideration under original merger agreement                   2,500,000        
Warrants exercisable commencement date         Jul. 19, 2018                  
Warrants term of exercise         3 years                  
Shares issued under private placement   175,000                        
Common and preferred shares issued   1,875,000                        
Number of common stock and warrants owned   2,150,000                        
Percentage of common stock owned   82.00%                        
Closing market price per share | $ / shares   $ 8.15                        
Merger consideration outstanding common stock, value | $   $ 5,500,000                        
Merger, unaudited pro forma net sales | $                         $ 27,088,000  
Merger, unaudited pro forma net loss | $                         $ 32,064,000  
Cooltech Holding Corp. [Member] | Outstanding Stock Warrants and Options [Member]                            
Business Acquisition [Line Items]                            
Merger consideration outstanding common stock, value | $   $ 676,000                        
Cooltech Holding Corp. [Member] | Convertible Notes [Member]                            
Business Acquisition [Line Items]                            
Convertible notes amount | $         $ 1,000,000                  
Convertible notes interest rate         0.00%                  
Convertible notes term         3 years                  
Convertible notes converted into shares of common stock         114,285                  
Cooltech Holding Corp. [Member] | Stock Purchase Agreement [Member]                            
Business Acquisition [Line Items]                            
Common stock, shares issued   175,000           175,000            
Common stock price, per share | $ / shares   $ 10.00           $ 10.00            
Warrants exercisable into shares of common stock   175,000           175,000            
Exercise price of warrants, per share | $ / shares   $ 12.10           $ 12.10            
Stock purchase agreement date               Aug. 03, 2017            
Aggregate purchase price | $   $ 1,750,000           $ 1,750,000            
Cooltech Holding Corp. [Member] | Merger Agreement [Member]                            
Business Acquisition [Line Items]                            
Common stock, shares issued                     1,875,000      
Reduction in percentage of merger consideration                     25.00%      
Reduction in number of common shares issued under merger consideration                     625,000      
Number of common stock shares issued upon satisfaction of merger agreement           625,000                
Cooltech Holding Corp. [Member] | Option Agreement [Member]                            
Business Acquisition [Line Items]                            
Amount receivable upon transfer of assets | $           $ 4,568,000                
Right to exercise option beginning date           Mar. 12, 2018                
Right to exercise option ending date           Jan. 05, 2019                
Amount payable upon exercise of option | $           $ 4,568,000