Quarterly report pursuant to Section 13 or 15(d)

Held-to-Maturity Securities (Details)

v3.2.0.727
Held-to-Maturity Securities (Details) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Contractual maturities of held-to-maturity securities    
Held-to-maturity securities, Total $ 3,304,160 $ 3,379,905
Held-to-maturity Securities, Fair Value 3,309,479 3,382,715
Amortized cost, gross unrealized gains and losses, and fair value by investment category    
Held-to-maturity securities, Total 3,304,160 3,379,905
Held-to-maturity Securities, Gross Gain (26,803) (26,083)
Held-to-maturity Securities, Gross Losses (21,484) (23,273)
Held-to-maturity securities, fair value 3,309,479 3,382,715
Continuous Unrealized Loss Position    
Total Temporarily Impaired Securities, Less Than Twelve Months, Fair Value 1,050,850 752,484
Total Temporarily Impaired Securities Unrealized Losses, Less Than Twelve Months, Fair Value (8,486) (6,135)
Total Temporarily Impaired Securities, Over Twelve Months, Fair Value 411,682 693,757
Total Temporarily Impaired Securites, Unrealized Losses Over Twelve Months (12,998) (17,138)
Total Temporarily Impaired Securities, Fair Value 1,462,532 1,446,241
Total Temporarily Impaired Securities, Unrealized Losses (21,484) (23,273)
Federal agencies - mortgage backed securities [Member]    
Contractual maturities of held-to-maturity securities    
Held-to-maturity Securities, Under 1 year 0 0
Held-to-maturity Securities, 1-5 years 0 0
Held-to-maturity Securities, 6-10 years 24,901 24,901
Held-to-maturity Securities, Over 10 years 2,906,086 3,136,460
Held-to-maturity securities, Total 2,930,987 3,161,361
Fair Value, Under 1 year 0 0
Fair Value, 1-5 years 0 0
Fair Value, 6-10 years 24,476 24,263
Fair Value, Over 10 years 2,911,305 3,140,194
Held-to-maturity Securities, Fair Value 2,935,781 3,164,457
Amortized cost, gross unrealized gains and losses, and fair value by investment category    
Held-to-maturity securities, Total 2,930,987 3,161,361
Held-to-maturity Securities, Gross Gain (24,266) (24,832)
Held-to-maturity Securities, Gross Losses (19,472) (21,736)
Held-to-maturity securities, fair value 2,935,781 3,164,457
Continuous Unrealized Loss Position    
Total Temporarily Impaired Securities, Less Than Twelve Months, Fair Value 887,538 707,934
Total Temporarily Impaired Securities Unrealized Losses, Less Than Twelve Months, Fair Value (6,871) (5,550)
Total Temporarily Impaired Securities, Over Twelve Months, Fair Value 382,679 622,026
Total Temporarily Impaired Securites, Unrealized Losses Over Twelve Months (12,601) (16,186)
Total Temporarily Impaired Securities, Fair Value 1,270,217 1,329,960
Total Temporarily Impaired Securities, Unrealized Losses (19,472) (21,736)
Other Federal Agencies [Member]    
Contractual maturities of held-to-maturity securities    
Held-to-maturity Securities, Under 1 year 0 0
Held-to-maturity Securities, 1-5 years 0 0
Held-to-maturity Securities, 6-10 years 92,903 54,010
Held-to-maturity Securities, Over 10 years 272,671 156,553
Held-to-maturity securities, Total 365,574 210,563
Fair Value, Under 1 year 0 0
Fair Value, 1-5 years 0 0
Fair Value, 6-10 years 94,396 54,843
Fair Value, Over 10 years 271,961 155,821
Held-to-maturity Securities, Fair Value 366,357 210,664
Amortized cost, gross unrealized gains and losses, and fair value by investment category    
Held-to-maturity securities, Total 365,574 210,563
Held-to-maturity Securities, Gross Gain (2,537) (1,251)
Held-to-maturity Securities, Gross Losses (1,754) (1,150)
Held-to-maturity securities, fair value 366,357 210,664
Continuous Unrealized Loss Position    
Total Temporarily Impaired Securities, Less Than Twelve Months, Fair Value 163,312 36,956
Total Temporarily Impaired Securities Unrealized Losses, Less Than Twelve Months, Fair Value (1,615) (198)
Total Temporarily Impaired Securities, Over Twelve Months, Fair Value 21,662 71,731
Total Temporarily Impaired Securites, Unrealized Losses Over Twelve Months (139) (952)
Total Temporarily Impaired Securities, Fair Value 184,974 108,687
Total Temporarily Impaired Securities, Unrealized Losses (1,754) (1,150)
Municipal securities [Member]    
Contractual maturities of held-to-maturity securities    
Held-to-maturity Securities, Under 1 year 0 0
Held-to-maturity Securities, 1-5 years 0 0
Held-to-maturity Securities, 6-10 years 0 0
Held-to-maturity Securities, Over 10 years 7,599 7,981
Held-to-maturity securities, Total 7,599 7,981
Fair Value, Under 1 year 0 0
Fair Value, 1-5 years 0 0
Fair Value, 6-10 years 0 0
Fair Value, Over 10 years 7,341 7,594
Held-to-maturity Securities, Fair Value 7,341 7,594
Amortized cost, gross unrealized gains and losses, and fair value by investment category    
Held-to-maturity securities, Total 7,599 7,981
Held-to-maturity Securities, Gross Gain 0 0
Held-to-maturity Securities, Gross Losses (258) (387)
Held-to-maturity securities, fair value 7,341 7,594
Continuous Unrealized Loss Position    
Total Temporarily Impaired Securities, Less Than Twelve Months, Fair Value 0 7,594
Total Temporarily Impaired Securities Unrealized Losses, Less Than Twelve Months, Fair Value 0 (387)
Total Temporarily Impaired Securities, Over Twelve Months, Fair Value 7,341 0
Total Temporarily Impaired Securites, Unrealized Losses Over Twelve Months (258) 0
Total Temporarily Impaired Securities, Fair Value 7,341 7,594
Total Temporarily Impaired Securities, Unrealized Losses (258) (387)
Total U.S. Government backed agencies [Member]    
Contractual maturities of held-to-maturity securities    
Held-to-maturity securities, Total 3,296,561 3,371,924
Held-to-maturity Securities, Fair Value 3,302,138 3,375,121
Amortized cost, gross unrealized gains and losses, and fair value by investment category    
Held-to-maturity securities, Total 3,296,561 3,371,924
Held-to-maturity Securities, Gross Gain (26,803) (26,083)
Held-to-maturity Securities, Gross Losses (21,226) (22,886)
Held-to-maturity securities, fair value 3,302,138 3,375,121
Continuous Unrealized Loss Position    
Total Temporarily Impaired Securities, Less Than Twelve Months, Fair Value 1,050,850 744,890
Total Temporarily Impaired Securities Unrealized Losses, Less Than Twelve Months, Fair Value (8,486) (5,748)
Total Temporarily Impaired Securities, Over Twelve Months, Fair Value 404,341 693,757
Total Temporarily Impaired Securites, Unrealized Losses Over Twelve Months (12,740) (17,138)
Total Temporarily Impaired Securities, Fair Value 1,455,191 1,438,647
Total Temporarily Impaired Securities, Unrealized Losses $ (21,226) $ (22,886)