XML 48 R38.htm IDEA: XBRL DOCUMENT v3.7.0.1
Maturities of Investment Securities (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Rolling Maturity    
Available-for-Sale Amortized Cost, Within One Year $ 326,690  
Available-for-Sale Amortized Cost, After One Year but Within Five Years 1,108,186  
Available-for-Sale Amortized Cost, After Five Years but Within Ten Years 164,443  
Available-for-Sale Amortized Cost, After Ten Years 62,193  
Available-for-Sale, Amortized Cost 1,661,512 $ 1,624,976
Available-for-sale Securities, Debt Maturities, Fair Value, Rolling Maturity    
Available-for-Sale Estimated Fair Value, Within One Year 326,645  
Available-for-Sale Estimated Fair Value, After One Year but Within Five Years 1,105,388  
Available-for-Sale Estimated Fair Value, After Ten Years 163,370  
Available-for-Sale Estimated Fair Value, After Five Years but Within Ten Years 62,188  
Available-for-Sale, Estimated Fair Value 1,657,591 1,611,698
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount    
Held-to-Maturity Amortized Cost, Within One Year 75,598  
Held-to-Maturity Amortized Cost, After One Year but Within Five Years 278,753  
Held-to-Maturity Amortized Cost, After Five Years but Within Ten Years 109,051  
Held-to-Maturity Amortized Cost, After Ten Years 27,566  
Held-to-Maturity, Amortized Cost 490,968 512,770
Held-to-maturity Securities, Debt Maturities, Fair Value, Rolling Maturity    
Held-to-Maturity Estimated Fair Value, Within One Year 76,786  
Held-to-Maturity Estimated Fair Value, After One Year but Within Five Years 278,372  
Held-to-Maturity Estimated Fair Value, After Five Years but Within Ten Years 110,987  
Held-to-Maturity Estimated Fair Value, After Ten Years 27,780  
Held-to-Maturity, Estimated Fair Value 493,925 $ 513,273
Callable Within One Year    
Available-for-sale Securities and Held-to-maturity Securities    
Investment Securities Primarily Classified as Available-for-Sale, Amortized Costs, After One Year but Within Five Years 178,739  
Investment Securities Primarily Classified as Available-for-Sale, Fair Value, After One Year but Within Five Years $ 176,310