Major Customer and Geographic Information (Schedule of Revenues from Non-affiliated Customers) (Details) - Revenue Benchmark [Member]	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Customer A [Member]
Revenue, Major Customer [Line Items]
Risk percentage	38.00%	72.00%	54.00%	59.00%
Customer B [Member]
Revenue, Major Customer [Line Items]
Risk percentage	32.00%	8.00%	14.00%	14.00%
Customer C [Member]
Revenue, Major Customer [Line Items]
Risk percentage	17.00%	8.00%	18.00%	13.00%