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Major Customer and Geographic Information (Schedule of Non-affiliated Customers with Accounts Receivable) (Details) - Accounts Receivable [Member]
6 Months Ended 12 Months Ended
Jun. 30, 2021
Dec. 31, 2020
Customer A [Member]    
Revenue, Major Customer [Line Items]    
Risk percentage 15.00% 25.00%
Customer B [Member]    
Revenue, Major Customer [Line Items]    
Risk percentage 12.00%  
Customer C [Member]    
Revenue, Major Customer [Line Items]    
Risk percentage 70.00% 65.00%