XML 23 R29.htm IDEA: XBRL DOCUMENT v2.4.0.6
Long-Term Investments (Details 1) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Amortized cost and estimated fair value of available-for-sale securities    
Due in one year or less, Cost $ 593  
Due in one year or less Estimated Fair Value 596  
Due in two to ten years, Cost 1,242  
Due in two to ten years, Estimated Fair Value 1,250  
Due in ten to twenty years, Cost 0  
Due in ten to twenty years, Estimated Fair Value 0  
Due in twenty to forty years, Cost 6,100  
Due in twenty to forty years, Estimated Fair Value 5,049  
Total Cost 7,935  
Estimated Fair Value $ 6,895 $ 9,585