v3.19.1
Acquisition of Unitron Assets - Additional Information (Detail)
3 Months Ended 4 Months Ended 12 Months Ended
Aug. 17, 2018
USD ($)
Store
Mar. 12, 2018
shares
Jan. 05, 2018
shares
Aug. 02, 2017
shares
Mar. 31, 2019
USD ($)
Mar. 31, 2018
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2018
USD ($)
Business Acquisition [Line Items]                
Business acquisition, net sales         $ 5,225,000 $ 4,092,000    
Business acquisition, operating loss         $ 2,762,000 $ 2,531,000    
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