Summary of Significant Accounting Policies (Schedule of Concentration of Credit Risk, Percentage of Total Revenues) (Details) - Sales Revenue, Goods, Net [Member]	3 Months Ended				6 Months Ended
	Jun. 30, 2019		Jun. 30, 2018		Jun. 30, 2019		Jun. 30, 2018
Customer A [Member]
Summary of concentration of credit risk, customer as a percentage of total revenues
Concentration risk percentage	53.00%			[1]	54.00%		32.00%
Customer B [Member]
Summary of concentration of credit risk, customer as a percentage of total revenues
Concentration risk percentage	17.00%		36.00%		14.00%		20.00%
Customer C [Member]
Summary of concentration of credit risk, customer as a percentage of total revenues
Concentration risk percentage	12.00%			[1]	13.00%			[1]
Customer D [Member]
Summary of concentration of credit risk, customer as a percentage of total revenues
Concentration risk percentage		[1]	14.00%			[1]	12.00%
Customer E [Member]
Summary of concentration of credit risk, customer as a percentage of total revenues
Concentration risk percentage		[1]	29.00%			[1]	14.00%

[1] Amounts are less than 10%