XML 110 R49.htm IDEA: XBRL DOCUMENT v2.4.0.6
Summary of Significant Accounting Policies (Details 2) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Advertising and promotion of products      
Advertising costs $ 4,528 $ 5,149 $ 5,915