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ACQUISITION (Details Textual) - USD ($)
12 Months Ended
Apr. 05, 2017
Dec. 31, 2018
Dec. 31, 2017
Business Acquisition [Line Items]      
Payments to Acquire Businesses, Gross   $ 0 $ 6,845,000
Business Combination, Contingent Consideration, Liability, Current   1,000,000 0
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    
Business Combination, Contingent Consideration, Liability, Current   $ 1,000,000  
Commitments, Fair Value Disclosure   $ 150,000 $ 158,000
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