XML 23 R3.htm IDEA: XBRL DOCUMENT v2.4.0.6
Balance Sheets (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Balance Sheets Parenthetical    
Available-for-sale debt securities, amortized cost basis $ 2,496,830 $ 1,541,506
Common stock par value $ 5,000 $ 5,000
common stock shares authorized 1,000 1,000
common stock shares issued 500 500