Geographic Information (Narrative) (Details)	3 Months Ended		6 Months Ended			12 Months Ended
	Jun. 30, 2012 Net Sales [Member] Two Customers [Member]	Jun. 30, 2011 Net Sales [Member] Two Customers [Member]	Jun. 30, 2012 Net Sales [Member] Two Customers [Member]	Jun. 30, 2011 Net Sales [Member] One Customer [Member]	Jun. 30, 2012 Accounts Receivable [Member] Two Customers [Member]	Dec. 31, 2011 Accounts Receivable [Member] One Customer [Member]
Concentration Risk [Line Items]
Customers accounting for percentage of sales and/or receivables	33.00%	32.00%	33.00%	22.00%	23.00%	12.00%