Geographic Information (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Concentration Risk [Line Items]
Sales, net	$ 63,933	$ 56,058	$ 58,697
Net Sales [Member] | One Customer [Member]
Concentration Risk [Line Items]
Customers accounting for percentage of sales and/or receivables	21.00%	22.00%	22.00%
Net Sales [Member] | Top Five Customers [Member]
Concentration Risk [Line Items]
Customers accounting for percentage of sales and/or receivables	46.00%	44.00%	42.00%
Accounts Receivable [Member]
Concentration Risk [Line Items]
Customers accounting for percentage of sales and/or receivables	24.00%	12.00%
Customer Concentration Risk [Member] | Net Sales [Member] | Top Five Customers [Member]
Concentration Risk [Line Items]
Sales, net	$ 29,000	$ 25,000	$ 25,000