Revenue Concentrations, Significant Customers And Geographic Areas (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenue, Major Customer [Line Items]
Revenue, export sales percentage	81.00%	74.00%	83.00%	73.00%
Customer Concentration Risk | Sales Revenue, net | Customer A
Revenue, Major Customer [Line Items]
Concentration risk percentage			12.00%
Customer Concentration Risk | Sales Revenue, net | Customer B
Revenue, Major Customer [Line Items]
Concentration risk percentage			17.00%
Customer Concentration Risk | Sales Revenue, net | Customer C
Revenue, Major Customer [Line Items]
Concentration risk percentage			11.00%
Customer Concentration Risk | Accounts Receivable | Customer A
Revenue, Major Customer [Line Items]
Accounts receivable, net	$ 0		$ 0
Customer Concentration Risk | Accounts Receivable | Customer B
Revenue, Major Customer [Line Items]
Accounts receivable, net	2,400,000		2,400,000
Customer Concentration Risk | Accounts Receivable | Customer C
Revenue, Major Customer [Line Items]
Accounts receivable, net	$ 671,000		$ 671,000