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FAIR VALUE MEASUREMENT (Details) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Change in Level 3 Instruments [Abstract]          
Change in fair value of contingent consideration $ (400,000) $ 0 $ (400,000) $ 0 $ 0
Level 3 [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Contingent consideration 5,346,688   5,346,688   5,266,488
Change in Level 3 Instruments [Abstract]          
Opening balance 6,192,200   5,266,488    
Additions during the period 0   1,200,000    
Paid/settlements (445,512)   (719,800)    
Total gains recognized in Statement of Operations (400,000)   (400,000)    
Closing balance $ 5,346,688   $ 5,346,688   $ 5,266,488