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ACQUISITIONS (Details Textual) - USD ($)
 3 Months Ended
Sep. 18, 2017
Apr. 03, 2017
Mar. 31, 2019
Apr. 01, 2018
Business Acquisition [Line Items]        
Revenues     $ 68,776,067 $ 66,855,470
Net income     2,496,024 2,465,571
Zycron, Inc.        
Business Acquisition [Line Items]        
Initial cash paid for acquisition   $ 18,500,000    
Stock issued during period, value, acquisitions   1,000,000    
Escrow deposit   500,000    
Contingent consideration   $ 3,000,000    
Business combination, period of contingency   2 years    
Business combination, period for true-up of acquired working capital   120 days    
Revenues     9,000,000 17,600,000
Net income     900,000 1,600,000
Revenues     73,782,000 214,659,000
Net income     $ 3,203,000 6,992,000
Smart, Inc.        
Business Acquisition [Line Items]        
Initial cash paid for acquisition $ 6,000,000      
Contingent consideration $ 2,000,000      
Business combination, period of contingency 2 years      
Business combination, period for true-up of acquired working capital 90 days      
Revenues       200,000
Net income       $ 0
Private Placement | Zycron, Inc.        
Business Acquisition [Line Items]        
Stock issued during period, shares, acquisitions   70,670