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ACQUISITION (Details Textual) - USD ($)
9 Months Ended
Apr. 05, 2017
Sep. 30, 2018
Sep. 30, 2017
Business Acquisition [Line Items]      
Payments to Acquire Businesses, Gross   $ 0 $ 6,845,000
Contingent Consideration Classified as Equity, Fair Value Disclosure   $ 936,000  
Jiffy Air Tool Inc [Member]      
Business Acquisition [Line Items]      
Business Combination, Contingent Consideration, Liability $ 1,000,000    
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 15 years    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets $ 5,950,000    
Payments to Acquire Businesses, Gross 5,950,000    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment 1,050,000    
Working Capital Adjustment 155,000    
Jiffy Air Tool Inc [Member] | Real Property [Member]      
Business Acquisition [Line Items]      
Payments to Acquire Businesses, Gross 1,050,000    
Jiffy Air Tool Inc [Member] | Current Assets [Member]      
Business Acquisition [Line Items]      
Payments to Acquire Businesses, Gross $ 5,950,000