XML 57 R44.htm IDEA: XBRL DOCUMENT v3.4.0.3
Investment Securities - Investment Securities in Continuous Unrealized Loss Position (Detail) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]    
Estimated fair value, Less than 12 months $ 363,989 $ 4,246,991
Available For Sale Securities Continuous Unrealized Losses Position Less Than Twelve Months Aggregate Losses (3,906) (49,727)
Estimated fair value, 12 months or more 1,325,788 104,154
Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or More Aggregate Losses (29,791) (20,937)
Held to maturity, Estimated fair value, Less than 12 months 29,519 502,896
Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses (227) (2,136)
Held to maturity, Estimated fair value, 12 months or more 346,600 346,875
Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses (42,223) (47,469)
Total investment securities, fair value less than 12 months 393,508 4,749,887
Investment Securities Continuous Unrealized Loss Position Less Than Twelve Months Aggregate Losses (4,133) (51,863)
Total of investment securities, fair value, 12 Months or More 1,672,388 451,029
Investment Securities Continuous Unrealized Loss Position Twelve Months or Longer Aggregate Losses (72,014) (68,406)
Obligations of States and Political Subdivisions [Member]    
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]    
Estimated fair value, Less than 12 months   865
Available For Sale Securities Continuous Unrealized Losses Position Less Than Twelve Months Aggregate Losses   (2)
Estimated fair value, 12 months or more 1,706 1,335
Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or More Aggregate Losses (46) (40)
Held to maturity, Estimated fair value, Less than 12 months 28,707 42,913
Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses (215) (335)
Held to maturity, Estimated fair value, 12 months or more 8,813 5,853
Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses (117) (86)
Government Issued or Guaranteed [Member]    
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]    
Estimated fair value, Less than 12 months 337,672 4,061,899
Available For Sale Securities Continuous Unrealized Losses Position Less Than Twelve Months Aggregate Losses (1,959) (48,534)
Estimated fair value, 12 months or more 1,233,329 7,216
Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or More Aggregate Losses (4,039) (167)
Held to maturity, Estimated fair value, Less than 12 months 812 459,983
Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses (12) (1,801)
Held to maturity, Estimated fair value, 12 months or more 232,432 228,867
Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses (2,058) (6,016)
Privately Issued Mortgage-Backed Securities [Member]    
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]    
Estimated fair value, 12 months or more 34 43
Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or More Aggregate Losses (2) (2)
U.S. Treasury and Federal Agencies [Member]    
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]    
Estimated fair value, Less than 12 months 4,051 147,508
Available For Sale Securities Continuous Unrealized Losses Position Less Than Twelve Months Aggregate Losses (7) (187)
Privately Issued [Member]    
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]    
Held to maturity, Estimated fair value, 12 months or more 105,355 112,155
Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses (40,048) (41,367)
Collateralized Debt Obligations [Member]    
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]    
Estimated fair value, Less than 12 months 10,326 5,711
Available For Sale Securities Continuous Unrealized Losses Position Less Than Twelve Months Aggregate Losses (527) (335)
Estimated fair value, 12 months or more 1,858 2,063
Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or More Aggregate Losses (1,086) (853)
Other Debt Securities [Member]    
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]    
Estimated fair value, Less than 12 months 9,825 12,935
Available For Sale Securities Continuous Unrealized Losses Position Less Than Twelve Months Aggregate Losses (1,203) (462)
Estimated fair value, 12 months or more 88,715 93,344
Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or More Aggregate Losses (24,464) (19,728)
Equity Securities [Member]    
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]    
Estimated fair value, Less than 12 months 2,115 18,073
Available For Sale Securities Continuous Unrealized Losses Position Less Than Twelve Months Aggregate Losses (210) (207)
Estimated fair value, 12 months or more 146 153
Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or More Aggregate Losses $ (154) $ (147)