Significant Customers (Details) - Customer / Number	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Sales Revenue, Net [Member]
Significant Customers (Textual)
Number of customers	3	3
Concentration risk, description	No other customer accounted for 10% or more of the Company's revenues	No other customer accounted for 10% or more of the Company's revenues.
Sales Revenue, Net [Member] | Customer One [Member]
Significant Customers (Textual)
Concentration risk, percentage	21.00%	17.00%
Sales Revenue, Net [Member] | Customer Two [Member]
Significant Customers (Textual)
Concentration risk, percentage	20.00%	16.00%
Sales Revenue, Net [Member] | Customer three [Member]
Significant Customers (Textual)
Concentration risk, percentage	18.00%	10.00%
Accounts Receivable [Member]
Significant Customers (Textual)
Concentration risk, description	Customers individually representing more than 10% of trade receivables.		Customers individually representing more than 10% of trade receivables.
Accounts Receivable [Member] | Customer [Member]
Significant Customers (Textual)
Concentration risk, percentage	71.00%		79.00%