Restructuring Costs (Details Narrative) $ in Millions	3 Months Ended	12 Months Ended	18 Months Ended
	Sep. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2014 position
Restructuring Cost and Reserve [Line Items]
Entity number of employees		81
Lease disposal related costs incurred	$ 1.1
2017 Plan
Restructuring Cost and Reserve [Line Items]
Severance expense		$ 1.2
Restructuring Costs Under the 2013 Plan
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated, worldwide (over 100) | position			100