Debt Agreements (Details)	12 Months Ended
Debt Agreements (Details)	Dec. 31, 2018 $ / shares
Assumption
Weighted-average fair value of warrants	$ 4.86
Horizon Warrants [Member]
Assumption
Date of issuance	Jul. 27, 2017
Weighted-average fair value of warrants	$ 6.12
Horizon Warrants [Member] \| Measurement Input, Price Volatility [Member]
Assumption
Fair Value Assumptions Rate	47.00%
Horizon Warrants [Member] \| Measurement Input, Expected Term [Member]
Assumption
Fair Value Assumptions Term	7 years
Horizon Warrants [Member] \| Measurement Input, Risk Free Interest Rate [Member]
Assumption
Fair Value Assumptions Rate	2.12%
Horizon Warrants [Member] \| Measurement Input, Expected Dividend Rate [Member]
Assumption
Fair Value Assumptions Rate	0.00%
New Horizon Warrants [Member]
Assumption
Date of issuance	Mar. 21, 2018
Weighted-average fair value of warrants	$ 4.86
New Horizon Warrants [Member] \| Measurement Input, Price Volatility [Member]
Assumption
Fair Value Assumptions Rate	86.00%
New Horizon Warrants [Member] \| Measurement Input, Expected Term [Member]
Assumption
Fair Value Assumptions Term	7 years
New Horizon Warrants [Member] \| Measurement Input, Risk Free Interest Rate [Member]
Assumption
Fair Value Assumptions Rate	2.82%
New Horizon Warrants [Member] \| Measurement Input, Expected Dividend Rate [Member]
Assumption
Fair Value Assumptions Rate	0.00%