Business Segments and Major Customers (Details 2) (Sales, net, Customer Concentration Risk)	Dec. 31, 2011 Customer A	Dec. 31, 2010 Customer A	Dec. 31, 2011 Customer B	Dec. 31, 2011 Customer C	Dec. 31, 2010 Customer C	Dec. 31, 2009 Customer D	Dec. 31, 2009 Customer E	Dec. 31, 2009 Customer F	Dec. 31, 2009 Customer G	Dec. 31, 2009 Customer H
Concentration Risk
Concentration Risk, Percentage	30.00%	56.00%	11.00%	10.00%	15.00%	24.00%	15.00%	13.00%	13.00%	11.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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