v3.19.1
Merger with Cooltech - Additional Information (Detail)
 1 Months Ended 3 Months Ended
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
Mar. 31, 2019
Business Acquisition [Line Items]                      
Warrants exercisable into shares of common stock     570,287                
Exercise price of warrants, per share | $ / shares     $ 9.15                
Reverse stock split description   one-for-five reverse stock split       1-for-5 reverse stock split          
Reverse stock split, conversion ratio   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                    
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        
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        
Stock purchase agreement date             Aug. 03, 2017        
Aggregate purchase price | $             $ 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