Quarterly report pursuant to Section 13 or 15(d)

Acquisitions - Summary of Final Allocation of Total Consideration to the Acquired Net Assets (Details)

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Acquisitions - Summary of Final Allocation of Total Consideration to the Acquired Net Assets (Details) - USD ($)
Sep. 30, 2019
Apr. 30, 2019
Dec. 31, 2018
Oct. 31, 2018
Aug. 31, 2018
Business Acquisition [Line Items]          
Goodwill $ 7,120,510   $ 7,914,211    
Concept Development Inc          
Business Acquisition [Line Items]          
Cash 139,634        
Accounts receivable 489,267        
Prepaid expenses 45,683        
Inventories 205,635        
Property and equipment 45,026        
Deposits and other 12,526        
Intangibles   $ 575,000     $ 1,770,000
Accounts payable (91,997)        
Accrued expenses (99,711)        
Deferred revenue (95,610)        
Deferred income taxes (258,301)        
Other accrued liabilities (50,985)        
Working capital loan (370,096)        
Total fair value excluding goodwill 546,071        
Goodwill 4,295,361 1,195,000     3,100,361
Total consideration 4,841,432        
Concept Development Inc | Customer Lists and Relationships          
Business Acquisition [Line Items]          
Intangibles 470,000 470,000     1,470,000
Concept Development Inc | Trade Name          
Business Acquisition [Line Items]          
Intangibles 90,000 90,000     100,000
Concept Development Inc | Non-Compete          
Business Acquisition [Line Items]          
Intangibles $ 15,000 $ 15,000     $ 200,000
Bressner Technology          
Business Acquisition [Line Items]          
Cash       $ 560,932  
Accounts receivable       2,238,881  
Inventories       3,721,685  
Prepaid expenses and deposits       124,491  
Property and equipment       346,637  
Intangibles       1,777,110  
Accounts payable and accrued expenses       (2,076,450)  
Notes payable       (2,536,148)  
Deferred income taxes       (43,499)  
Total fair value excluding goodwill       4,113,639  
Goodwill       1,489,722  
Total consideration       5,603,361  
Bressner Technology | Customer Lists and Relationships          
Business Acquisition [Line Items]          
Intangibles       1,215,798  
Bressner Technology | Trade Name          
Business Acquisition [Line Items]          
Intangibles       329,515  
Bressner Technology | Non-Compete          
Business Acquisition [Line Items]          
Intangibles       $ 231,797