v3.19.2
Acquisition of Unitron Assets - Additional Information (Detail)
3 Months Ended 4 Months Ended 6 Months Ended 12 Months Ended
Aug. 17, 2018
USD ($)
Store
Mar. 12, 2018
shares
Jan. 05, 2018
shares
Aug. 02, 2017
shares
Jun. 30, 2019
USD ($)
Jun. 30, 2018
USD ($)
Dec. 31, 2018
USD ($)
Jun. 30, 2019
USD ($)
Jun. 30, 2018
USD ($)
Dec. 31, 2018
USD ($)
Business Acquisition [Line Items]                    
Business acquisition, net sales         $ 4,929,000 $ 6,212,000   $ 10,154,000 $ 10,304,000  
Business acquisition, operating loss         $ 4,649,000 $ 2,487,000   $ 7,411,000 $ 5,018,000  
Cooltech Holding Corp. ("Cooltech") [Member]                    
Business Acquisition [Line Items]                    
Common stock, shares issued | shares   675,656   100,000            
Cooltech Holding Corp. ("Cooltech") [Member] | Restricted Stock Award [Member]                    
Business Acquisition [Line Items]                    
Common stock, shares issued | shares     625,000              
Unitron Assets [Member]                    
Business Acquisition [Line Items]                    
Advanced funds $ 3,700,000                  
Assumption of debt under merger consideration $ 868,000                  
Business acquisition, unaudited pro forma net sales                   $ 26,503,000
Business acquisition, unaudited pro forma net loss                   $ 22,383,000
Unitron Assets [Member] | Dominican Republic [Member]                    
Business Acquisition [Line Items]                    
Number of retail electronic stores acquired | Store 7                  
Business acquisition, net sales             $ 1,607,000      
Business acquisition, operating loss             $ 204,000