v3.20.1
Acquisition of Unitron - Additional Information (Detail)
4 Months Ended 12 Months Ended
Aug. 17, 2018
USD ($)
Store
Mar. 12, 2018
shares
Jan. 05, 2018
shares
Aug. 02, 2017
shares
Dec. 31, 2018
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Business Acquisition [Line Items]              
Business acquisition, net sales           $ 30,385,000 $ 11,615,000
Business acquisition, operating loss           $ 13,249,000 9,597,000
Cooltech Holding Corp. ("Cooltech") [Member]              
Business Acquisition [Line Items]              
Common stock, shares issued | shares   675,656   100,000      
Business acquisition, unaudited pro forma net sales             27,088,000
Business acquisition, unaudited pro forma net loss             32,064,000
Cooltech Holding Corp. ("Cooltech") [Member] | Restricted Stock Award [Member]              
Business Acquisition [Line Items]              
Common stock, shares issued | shares     625,000        
Cooltech Holding Corp. ("Cooltech") [Member] | Dominican Republic [Member]              
Business Acquisition [Line Items]              
Number of retail electronic stores acquired | Store 7            
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