Annual report pursuant to Section 13 and 15(d)

GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Schedule of Other Intangible Assets (Details)

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GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Schedule of Other Intangible Assets (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]    
Original Useful life 15 years  
Cost $ 33,933,380 $ 32,995,764
Net book value 3,666,778 4,406,605
Less - accumulated amortization (30,266,602) (28,589,159)
Amortized cost 3,666,778 4,406,605
Trademarks (indefinite lives) 799,000 799,000
Net book value, total 4,465,778 5,205,605
Technology    
Finite-Lived Intangible Assets [Line Items]    
Cost 9,988,000 9,988,000
Net book value 501,000 980,750
Amortized cost 501,000 980,750
Capitalized software costs    
Finite-Lived Intangible Assets [Line Items]    
Cost 6,499,735 5,562,119
Net book value 1,268,278 741,355
Amortized cost $ 1,268,278 741,355
Trademarks    
Finite-Lived Intangible Assets [Line Items]    
Original Useful life 10 years  
Cost $ 28,000 28,000
Net book value 0 0
Amortized cost 0 0
Backlog/customer relationship    
Finite-Lived Intangible Assets [Line Items]    
Cost 2,844,000 2,844,000
Net book value 0 0
Amortized cost $ 0 0
Covenant not to compete    
Finite-Lived Intangible Assets [Line Items]    
Original Useful life 6 years  
Cost $ 400,000 400,000
Net book value 29,000 76,000
Amortized cost 29,000 76,000
Customer list    
Finite-Lived Intangible Assets [Line Items]    
Cost 14,173,645 14,173,645
Net book value 1,868,500 2,608,500
Amortized cost $ 1,868,500 $ 2,608,500
Minimum | Technology    
Finite-Lived Intangible Assets [Line Items]    
Original Useful life 4 years  
Minimum | Capitalized software costs    
Finite-Lived Intangible Assets [Line Items]    
Original Useful life 3 years  
Minimum | Backlog/customer relationship    
Finite-Lived Intangible Assets [Line Items]    
Original Useful life 1 year  
Minimum | Customer list    
Finite-Lived Intangible Assets [Line Items]    
Original Useful life 2 years  
Maximum | Technology    
Finite-Lived Intangible Assets [Line Items]    
Original Useful life 8 years  
Maximum | Capitalized software costs    
Finite-Lived Intangible Assets [Line Items]    
Original Useful life 5 years  
Maximum | Backlog/customer relationship    
Finite-Lived Intangible Assets [Line Items]    
Original Useful life 10 years  
Maximum | Customer list    
Finite-Lived Intangible Assets [Line Items]    
Original Useful life 10 years