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Intangible Assets - Summary of Acquired Intangible Assets (Details) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Acquired Finite Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 6,030,000 $ 6,030,000
Accumulated Amortization 1,742,040 1,578,277
Intangibles, Net $ 4,287,960 $ 4,451,723
Customer relationships    
Acquired Finite Lived Intangible Assets [Line Items]    
Weighted Average Amortization Period (years) 10 years 10 years
Gross Carrying Amount $ 4,830,000 $ 4,830,000
Accumulated Amortization 1,357,832 1,237,082
Intangibles, Net $ 3,472,168 $ 3,592,918
Developed technologies    
Acquired Finite Lived Intangible Assets [Line Items]    
Weighted Average Amortization Period (years) 9 years 9 years
Gross Carrying Amount $ 1,080,000 $ 1,080,000
Accumulated Amortization 307,541 274,528
Intangibles, Net $ 772,459 $ 805,472
Tradename    
Acquired Finite Lived Intangible Assets [Line Items]    
Weighted Average Amortization Period (years) 3 years 3 years
Gross Carrying Amount $ 120,000 $ 120,000
Accumulated Amortization 76,667 66,667
Intangibles, Net $ 43,333 $ 53,333