XML 63 R50.htm IDEA: XBRL DOCUMENT v2.4.0.6
Investments (Schedule Of Investments) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Schedule of Equity Method Investments [Line Items]    
Total investments, Current $ 7,627 $ 7,678
2011 Carrying Value [Member]
   
Schedule of Equity Method Investments [Line Items]    
Available-for-sale equity securities, Current 36  
Certificates of deposit and other securities, Current 7,591  
Total investments, Current 7,627  
Certificates of deposit and other securities, Non-Current 516  
Total investments, Non-Current 516  
2010 Carrying Value [Member]
   
Schedule of Equity Method Investments [Line Items]    
Available-for-sale equity securities, Current   36
Certificates of deposit and other securities, Current   7,642
Total investments, Current   7,678
Certificates of deposit and other securities, Non-Current   517
Total investments, Non-Current   $ 517