Earn-out Milestone Liability - Schedule of Milestone Risk Adjustment Assessment (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017	Dec. 31, 2016
Discount Rate	9.00%	9.00%	9.00%	9.00%	9.00%	9.00%
Minimum [Member]
Risk-adjustment Assessment of each Milestone	35.00%	50.00%	35.00%	50.00%	35.00%	50.00%
Estimated Time to Achieve (in years)	1 year 29 days	1 year 9 months	9 months 29 days	1 year 6 months	1 year 3 months 29 days	2 years
Maximum [Member]
Risk-adjustment Assessment of each Milestone	80.00%	80.00%	80.00%	80.00%	80.00%	80.00%
Estimated Time to Achieve (in years)	1 year 2 months 30 days	2 years 2 months 30 days	1 year	2 years	1 year 6 months	2 years 6 months