XML 41 R43.htm IDEA: XBRL DOCUMENT v2.4.0.8
Fair Value Measurements (Carrying Value and Estimated Fair Value of Financial Instruments) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Held-to-maturity Securities $ 382,056 $ 392,879
Available-for-sale Securities 3,815,853 3,715,536
Equity securities, AFS 197,687 192,771
Short-term investments 137,733 174,251
Notes payable 392,420 392,414
Carrying Amount [Member]
    
Held-to-maturity Securities 382,056 392,879
Available-for-sale Securities 3,815,853 3,715,536
Equity securities, AFS 197,687 192,771
Short-term investments 137,733 174,251
Notes payable 392,420 392,414
Carrying Amount [Member] | Two Point Ninety Percent Borrowing From Federal Home Loan Bank [Member]
    
Notes payable 13,000 13,000
Carrying Amount [Member] | One Point Twenty Five Percent Borrowing From Federal Home Loan Bank [Member]
    
Notes payable 45,000 45,000
Carrying Amount [Member] | Seven Point Twenty Five Percent Senior Notes [Member]
    
Notes payable 49,917 49,916
Carrying Amount [Member] | Six Point Seventy Percent Senior Notes [Member]
    
Notes payable 99,503 99,498
Carrying Amount [Member] | Five Point Eight Hundred Seventy Five Senior Notes [Member]
    
Notes payable 185,000 185,000
Fair Value [Member]
    
Held-to-maturity Securities 403,536 416,981
Available-for-sale Securities 3,815,853 3,715,536
Equity securities, AFS 197,687 192,771
Short-term investments 137,733 174,251
Notes payable 379,660 354,010
Fair Value [Member] | Two Point Ninety Percent Borrowing From Federal Home Loan Bank [Member]
    
Notes payable 13,243 13,319
Fair Value [Member] | One Point Twenty Five Percent Borrowing From Federal Home Loan Bank [Member]
    
Notes payable 45,226 45,259
Fair Value [Member] | Seven Point Twenty Five Percent Senior Notes [Member]
    
Notes payable 53,065 50,887
Fair Value [Member] | Six Point Seventy Percent Senior Notes [Member]
    
Notes payable 102,810 98,247
Fair Value [Member] | Five Point Eight Hundred Seventy Five Senior Notes [Member]
    
Notes payable $ 165,316 $ 146,298