XML 106 R88.htm IDEA: XBRL DOCUMENT v2.4.0.8
Fair Value Measurements (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Sep. 30, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities $ 2,360,948 $ 1,781,705
Fair Value, Measurements, Recurring | Level 1
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 101,237  
Fair Value, Measurements, Recurring | Level 2
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 2,259,711  
Fair Value, Measurements, Recurring | Level 3
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0  
Fair Value, Measurements, Recurring | Estiamte of Fair Value
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 2,360,948  
Equity securities | Fair Value, Measurements, Recurring | Level 1
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 101,237  
Equity securities | Fair Value, Measurements, Recurring | Level 2
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0  
Equity securities | Fair Value, Measurements, Recurring | Level 3
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0  
Equity securities | Fair Value, Measurements, Recurring | Estiamte of Fair Value
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 101,237  
Obligations of U.S. government | Fair Value, Measurements, Recurring | Level 1
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0  
Obligations of U.S. government | Fair Value, Measurements, Recurring | Level 2
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 533,975  
Obligations of U.S. government | Fair Value, Measurements, Recurring | Level 3
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0  
Obligations of U.S. government | Fair Value, Measurements, Recurring | Estiamte of Fair Value
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 533,975  
Obligations of states and political subdivisions | Fair Value, Measurements, Recurring | Level 1
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0  
Obligations of states and political subdivisions | Fair Value, Measurements, Recurring | Level 2
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 22,545  
Obligations of states and political subdivisions | Fair Value, Measurements, Recurring | Level 3
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0  
Obligations of states and political subdivisions | Fair Value, Measurements, Recurring | Estiamte of Fair Value
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 22,545  
Obligations of foreign governments | Fair Value, Measurements, Recurring | Level 1
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0  
Obligations of foreign governments | Fair Value, Measurements, Recurring | Level 2
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0  
Obligations of foreign governments | Fair Value, Measurements, Recurring | Level 3
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0  
Obligations of foreign governments | Fair Value, Measurements, Recurring | Estiamte of Fair Value
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0  
Corporate debt securities | Fair Value, Measurements, Recurring | Level 1
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0  
Corporate debt securities | Fair Value, Measurements, Recurring | Level 2
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 452,015  
Corporate debt securities | Fair Value, Measurements, Recurring | Level 3
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0  
Corporate debt securities | Fair Value, Measurements, Recurring | Estiamte of Fair Value
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 452,015  
Agency pass through mortgage-backed securities | Fair Value, Measurements, Recurring | Level 1
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0  
Agency pass through mortgage-backed securities | Fair Value, Measurements, Recurring | Level 2
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 1,251,176  
Agency pass through mortgage-backed securities | Fair Value, Measurements, Recurring | Level 3
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0  
Agency pass through mortgage-backed securities | Fair Value, Measurements, Recurring | Estiamte of Fair Value
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 1,251,176  
Other debt securites | Fair Value, Measurements, Recurring | Level 1
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0  
Other debt securites | Fair Value, Measurements, Recurring | Level 2
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0  
Other debt securites | Fair Value, Measurements, Recurring | Level 3
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0  
Other debt securites | Fair Value, Measurements, Recurring | Estiamte of Fair Value
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities $ 0