Significant Customers (Narrative) (Details)	3 Months Ended
	Mar. 31, 2013 customer	Mar. 31, 2012
Revenue, Major Customer [Line Items]
Revenue, export sales percentage	80.00%	87.00%
Number of major customers	2
Juki [Member]
Revenue, Major Customer [Line Items]
Major customers, total revenue percentage, less than 10%	8.00%
Assembleon [Member]
Revenue, Major Customer [Line Items]
Major customers, total revenue percentage	10.00%