XML 43 R34.htm IDEA: XBRL DOCUMENT v3.22.2.2
Available for Sale Securities (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2021
USD ($)
Dec. 31, 2021
USD ($)
Debt Securities, Available-for-sale [Line Items]          
Available-for-sale Securities, Amortized Cost $ 10,976,682   $ 10,976,682   $ 13,064,436
Available-for-sale Securities, Fair Value 10,040,894   10,040,894   13,157,817
Available-for-sale Securities, Gross Unrealized Gain 10,753   10,753   207,361
Available-for-sale Securities, Gross Unrealized Loss (946,541)   (946,541)   $ (113,980)
Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract]          
Available-for-sale Securities, Proceeds 30,834 $ 94,128 242,135 $ 488,274  
Available-for-sale Securities, Gross realized gains 1,116 1,572 4,510 3,812  
Available-for-sale Securities, Gross realized losses (224) (317) (1,493) (660)  
Available-for-sale Securities, Related federal and state income tax expense (benefit) $ 209 $ 301 $ 706 $ 756  
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions 1,167   1,167   462
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value $ 7,393,498   $ 7,393,498   $ 4,911,358
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 565,666   565,666   80,372
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 2,602,678   2,602,678   1,476,208
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 380,875   380,875   33,608
Debt Securities, Available-for-sale, Unrealized Loss Position 9,996,176   9,996,176   6,387,566
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss 946,541   946,541   113,980
Asset Pledged as Collateral with Right          
Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract]          
Pledged Securities 8,900,000   8,900,000   10,200,000
Fixed Maturity Securities [Member]          
Debt Securities, Available-for-sale, Maturity, Amortized Cost, Rolling Maturity [Abstract]          
Available-for-sale Securities, Debt Maturities, Less than One Year, Amortized Cost Basis 122,091   122,091    
Available-for-sale Securities, Debt Maturities, One to Five Years, Amortized Cost Basis 2,162,215   2,162,215    
Available-for-sale Securities, Debt Maturities, Six To Ten Years, Amortized Cost Basis 2,420,097   2,420,097    
Available-for-sale Securities, Debt Maturities, Over Ten Years, Amortized Cost Basis 440,731   440,731    
Available-for-sale Securities, Debt Maturities, Allocated and Single Maturity Date, Amortized Cost 5,145,134   5,145,134    
Debt Securities, Available-for-sale, Maturity, Fair Value, Rolling Maturity [Abstract]          
Available-for-sale Securities, Debt Maturities, Less than One Year, Fair Value 120,736   120,736    
Available-for-sale Securities, Debt Maturities, One to Five Years, Fair Value 2,007,747   2,007,747    
Available-for-sale Securities, Debt Maturities, Six to Ten Years, Fair Value 2,108,706   2,108,706    
Available-for-sale Securities, Debt Maturities, Over Ten Years, Fair Value 402,742   402,742    
Available-for-sale Securities, Debt Maturities, Allocated and Single Maturity Date, Fair Value $ 4,639,931   $ 4,639,931    
Available-for-sale Securities, Debt Maturities, Weighted Average Maturity [1] 6.15   6.15    
U.S. Treasury [Member]          
Debt Securities, Available-for-sale [Line Items]          
Available-for-sale Securities, Amortized Cost $ 1,000   $ 1,000   1,001
Available-for-sale Securities, Fair Value 890   890   1,000
Available-for-sale Securities, Gross Unrealized Gain 0   0   0
Available-for-sale Securities, Gross Unrealized Loss $ (110)   $ (110)   $ (1)
Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract]          
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions 1   1   1
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value $ 890   $ 890   $ 1,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 110   110   1
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 0   0   0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 0   0   0
Debt Securities, Available-for-sale, Unrealized Loss Position 890   890   1,000
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss 110   110   1
Municipal securities [Member]          
Debt Securities, Available-for-sale [Line Items]          
Available-for-sale Securities, Amortized Cost 689,779   689,779   515,551
Available-for-sale Securities, Fair Value 619,349   619,349   508,365
Available-for-sale Securities, Gross Unrealized Gain 0   0   1,302
Available-for-sale Securities, Gross Unrealized Loss $ (70,430)   $ (70,430)   $ (8,488)
Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract]          
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions 238   238   175
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value $ 275,952   $ 275,952   $ 423,575
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 20,417   20,417   7,762
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 343,396   343,396   22,476
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 50,013   50,013   726
Debt Securities, Available-for-sale, Unrealized Loss Position 619,348   619,348   446,051
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss 70,430   70,430   8,488
Commercial agency mortgage-backed securities [Member]          
Debt Securities, Available-for-sale [Line Items]          
Available-for-sale Securities, Amortized Cost 4,453,855   4,453,855   4,628,172
Available-for-sale Securities, Fair Value 4,019,220   4,019,220   4,617,025
Available-for-sale Securities, Gross Unrealized Gain 0   0   36,868
Available-for-sale Securities, Gross Unrealized Loss $ (434,635)   $ (434,635)   $ (48,015)
Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract]          
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions 281   281   165
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value $ 1,866,226   $ 1,866,226   $ 2,104,689
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 114,850   114,850   35,488
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 2,152,994   2,152,994   703,216
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 319,785   319,785   12,527
Debt Securities, Available-for-sale, Unrealized Loss Position 4,019,220   4,019,220   2,807,905
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss 434,635   434,635   48,015
Other debt securities [Member]          
Debt Securities, Available-for-sale [Line Items]          
Available-for-sale Securities, Amortized Cost 500   500   500
Available-for-sale Securities, Fair Value 472   472   472
Available-for-sale Securities, Gross Unrealized Gain 0   0   0
Available-for-sale Securities, Gross Unrealized Loss $ (28)   $ (28)   $ (28)
Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract]          
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions 1   1   1
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value $ 0   $ 0   $ 0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 0   0   0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 472   472   472
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 28   28   28
Debt Securities, Available-for-sale, Unrealized Loss Position 472   472   472
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss 28   28   28
Residential Mortgage Backed Securities [Member]          
Debt Securities, Available-for-sale, Maturity, Amortized Cost, Rolling Maturity [Abstract]          
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost [2] 5,831,548   5,831,548    
Debt Securities, Available-for-sale, Maturity, Fair Value, Rolling Maturity [Abstract]          
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value $ 5,400,963   5,400,963    
Available-for-sale Securities, Debt Maturities, Average Expected Life of Mortgage-backed Securities 4 years 4 months 24 days        
Residential agency mortgage-backed securities [Member]          
Debt Securities, Available-for-sale [Line Items]          
Available-for-sale Securities, Amortized Cost $ 5,286,454   5,286,454   7,908,587
Available-for-sale Securities, Fair Value 4,894,569   4,894,569   8,006,616
Available-for-sale Securities, Gross Unrealized Gain 221   221   155,477
Available-for-sale Securities, Gross Unrealized Loss $ (392,106)   $ (392,106)   $ (57,448)
Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract]          
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions 621   621   120
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value $ 4,761,363   $ 4,761,363   $ 2,382,094
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 381,057   381,057   37,121
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 105,816   105,816   750,044
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 11,049   11,049   20,327
Debt Securities, Available-for-sale, Unrealized Loss Position 4,867,179   4,867,179   3,132,138
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss 392,106   392,106   57,448
Residential non-agency mortgage-backed securities [Member]          
Debt Securities, Available-for-sale [Line Items]          
Available-for-sale Securities, Amortized Cost 545,094   545,094   10,625
Available-for-sale Securities, Fair Value 506,394   506,394   24,339
Available-for-sale Securities, Gross Unrealized Gain 10,532   10,532   13,714
Available-for-sale Securities, Gross Unrealized Loss $ (49,232)   $ (49,232)   $ 0
Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract]          
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions 25   25    
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value $ 489,067   $ 489,067    
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 49,232   49,232    
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 0   0    
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 0   0    
Debt Securities, Available-for-sale, Unrealized Loss Position 489,067   489,067    
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss $ 49,232   $ 49,232    
[1] Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without penalty.
[2] The average expected lives of residential mortgage-backed securities were 4.4 years years based upon current prepayment assumptions.