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Investment Securities (Tables) | 3 Months Ended
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Mar. 31, 2022
Investments, Debt and Equity Securities [Abstract] |
Investment securities available for sale | The amortized cost and fair values of AFS and HTM securities at March 31, 2022 were as follows:
($ in Thousands) | Amortized Cost | Gross Unrealized Gains | Gross Unrealized (Losses) | Fair Value
Investment securities AFS |  |  |  |
U. S. Treasury securities | $ | 124,328 |  | $ | — |  | $ | (8,196) |  | $ | 116,132 |
Agency securities | 15,000 |  | — |  | (800) |  | 14,200 |
Obligations of state and political subdivisions (municipal securities) | 368,831 |  | 3,764 |  | (195) |  | 372,401 |
Residential mortgage-related securities |  |  |  |
FNMA / FHLMC | 1,993,893 |  | 937 |  | (100,011) |  | 1,894,819 |
GNMA | 59,470 |  | 166 |  | (726) |  | 58,909 |
Commercial mortgage-related securities |  |  |  |
FNMA / FHLMC | 19,290 |  | 496 |  | — |  | 19,786 |
GNMA | 128,019 |  | 18 |  | (1,278) |  | 126,760 |
Asset backed securities |  |  |  |
FFELP | 173,068 |  | — |  | (4,090) |  | 168,978 |
SBA | 5,865 |  | 33 |  | (53) |  | 5,845 |
Other debt securities | 3,000 |  | — |  | (27) |  | 2,973 |
Total investment securities AFS | $ | 2,890,763 |  | $ | 5,416 |  | $ | (115,376) |  | $ | 2,780,803 |
Investment securities HTM |  |  |  |
U. S. Treasury securities | $ | 998 |  | $ | — |  | $ | (34) |  | $ | 964 |
Obligations of state and political subdivisions (municipal securities) | 1,696,536 |  | 32,201 |  | (80,896) |  | 1,647,842 |
Residential mortgage-related securities |  |  |  |
FNMA / FHLMC | 956,470 |  | 35,739 |  | (72,418) |  | 919,790 |
GNMA | 44,742 |  | 116 |  | (643) |  | 44,215 |
Private-label | 384,016 |  | 13,460 |  | (28,955) |  | 368,521 |
Commercial mortgage-related securities |  |  |  |
FNMA/FHLMC | 764,775 |  | 17,620 |  | (88,784) |  | 693,610 |
GNMA | 92,383 |  | 1,032 |  | (3,456) |  | 89,959 |
Total investment securities HTM | $ | 3,939,920 |  | $ | 100,167 |  | $ | (275,186) |  | $ | 3,764,901 |
During the first quarter of 2022, the Corporation redesignated approximately $1.6 billion of mortgage-related securities from AFS to HTM. The reclassification of these investment securities was accounted for at fair value. Management elected to transfer these investment securities as the Corporation has the positive intent and ability to hold these investment securities to maturity. See Note 16 for additional information on the unrealized losses on investment securities transferred from AFS to HTM. The amortized cost and fair values of AFS and HTM securities at December 31, 2021 were as follows:
($ in Thousands) | Amortized Cost | Gross Unrealized Gains | Gross Unrealized (Losses) | Fair Value
Investment securities AFS |  |  |  |
U. S. Treasury securities | $ | 124,291 |  | $ | — |  | $ | (1,334) |  | $ | 122,957 |
Agency securities | 15,000 |  | — |  | (103) |  | 14,897 |
Obligations of state and political subdivisions (municipal securities) | 381,517 |  | 18,940 |  | — |  | 400,457 |
Residential mortgage-related securities |  |  |  |
FNMA / FHLMC | 2,709,399 |  | 3,729 |  | (21,249) |  | 2,691,879 |
GNMA | 66,189 |  | 1,591 |  | — |  | 67,780 |
Private-label | 332,028 |  | 31 |  | (2,335) |  | 329,724 |
Commercial mortgage-related securities |  |  |  |
FNMA / FHLMC | 357,240 |  | 2,686 |  | (9,302) |  | 350,623 |
GNMA | 165,439 |  | 1,360 |  | — |  | 166,799 |
Asset backed securities |  |  |  |
FFELP | 177,974 |  | 475 |  | (1,123) |  | 177,325 |
SBA | 6,594 |  | 39 |  | (54) |  | 6,580 |
Other debt securities | 3,000 |  | — |  | (6) |  | 2,994 |
Total investment securities AFS | $ | 4,338,671 |  | $ | 28,850 |  | $ | (35,506) |  | $ | 4,332,015 |
Investment securities HTM |  |  |  |
U. S. Treasury securities | $ | 1,000 |  | $ | 1 |  | $ | — |  | $ | 1,001 |
Obligations of state and political subdivisions (municipal securities) | 1,628,759 |  | 113,179 |  | (1,951) |  | 1,739,988 |
Residential mortgage-related securities |  |  |  |
FNMA / FHLMC | 34,347 |  | 1,792 |  | — |  | 36,139 |
GNMA | 48,053 |  | 1,578 |  | — |  | 49,631 |
Commercial mortgage-related securities |  |  |  |
FNMA / FHLMC | 425,937 |  | 122 |  | (6,659) |  | 419,400 |
GNMA | 100,907 |  | 1,799 |  | (200) |  | 102,506 |
Total investment securities HTM | $ | 2,239,003 |  | $ | 118,471 |  | $ | (8,809) |  | $ | 2,348,664 |
Investment securities held to maturity | The amortized cost and fair values of AFS and HTM securities at March 31, 2022 were as follows:
($ in Thousands) | Amortized Cost | Gross Unrealized Gains | Gross Unrealized (Losses) | Fair Value
Investment securities AFS |  |  |  |
U. S. Treasury securities | $ | 124,328 |  | $ | — |  | $ | (8,196) |  | $ | 116,132 |
Agency securities | 15,000 |  | — |  | (800) |  | 14,200 |
Obligations of state and political subdivisions (municipal securities) | 368,831 |  | 3,764 |  | (195) |  | 372,401 |
Residential mortgage-related securities |  |  |  |
FNMA / FHLMC | 1,993,893 |  | 937 |  | (100,011) |  | 1,894,819 |
GNMA | 59,470 |  | 166 |  | (726) |  | 58,909 |
Commercial mortgage-related securities |  |  |  |
FNMA / FHLMC | 19,290 |  | 496 |  | — |  | 19,786 |
GNMA | 128,019 |  | 18 |  | (1,278) |  | 126,760 |
Asset backed securities |  |  |  |
FFELP | 173,068 |  | — |  | (4,090) |  | 168,978 |
SBA | 5,865 |  | 33 |  | (53) |  | 5,845 |
Other debt securities | 3,000 |  | — |  | (27) |  | 2,973 |
Total investment securities AFS | $ | 2,890,763 |  | $ | 5,416 |  | $ | (115,376) |  | $ | 2,780,803 |
Investment securities HTM |  |  |  |
U. S. Treasury securities | $ | 998 |  | $ | — |  | $ | (34) |  | $ | 964 |
Obligations of state and political subdivisions (municipal securities) | 1,696,536 |  | 32,201 |  | (80,896) |  | 1,647,842 |
Residential mortgage-related securities |  |  |  |
FNMA / FHLMC | 956,470 |  | 35,739 |  | (72,418) |  | 919,790 |
GNMA | 44,742 |  | 116 |  | (643) |  | 44,215 |
Private-label | 384,016 |  | 13,460 |  | (28,955) |  | 368,521 |
Commercial mortgage-related securities |  |  |  |
FNMA/FHLMC | 764,775 |  | 17,620 |  | (88,784) |  | 693,610 |
GNMA | 92,383 |  | 1,032 |  | (3,456) |  | 89,959 |
Total investment securities HTM | $ | 3,939,920 |  | $ | 100,167 |  | $ | (275,186) |  | $ | 3,764,901 |
During the first quarter of 2022, the Corporation redesignated approximately $1.6 billion of mortgage-related securities from AFS to HTM. The reclassification of these investment securities was accounted for at fair value. Management elected to transfer these investment securities as the Corporation has the positive intent and ability to hold these investment securities to maturity. See Note 16 for additional information on the unrealized losses on investment securities transferred from AFS to HTM. The amortized cost and fair values of AFS and HTM securities at December 31, 2021 were as follows:
($ in Thousands) | Amortized Cost | Gross Unrealized Gains | Gross Unrealized (Losses) | Fair Value
Investment securities AFS |  |  |  |
U. S. Treasury securities | $ | 124,291 |  | $ | — |  | $ | (1,334) |  | $ | 122,957 |
Agency securities | 15,000 |  | — |  | (103) |  | 14,897 |
Obligations of state and political subdivisions (municipal securities) | 381,517 |  | 18,940 |  | — |  | 400,457 |
Residential mortgage-related securities |  |  |  |
FNMA / FHLMC | 2,709,399 |  | 3,729 |  | (21,249) |  | 2,691,879 |
GNMA | 66,189 |  | 1,591 |  | — |  | 67,780 |
Private-label | 332,028 |  | 31 |  | (2,335) |  | 329,724 |
Commercial mortgage-related securities |  |  |  |
FNMA / FHLMC | 357,240 |  | 2,686 |  | (9,302) |  | 350,623 |
GNMA | 165,439 |  | 1,360 |  | — |  | 166,799 |
Asset backed securities |  |  |  |
FFELP | 177,974 |  | 475 |  | (1,123) |  | 177,325 |
SBA | 6,594 |  | 39 |  | (54) |  | 6,580 |
Other debt securities | 3,000 |  | — |  | (6) |  | 2,994 |
Total investment securities AFS | $ | 4,338,671 |  | $ | 28,850 |  | $ | (35,506) |  | $ | 4,332,015 |
Investment securities HTM |  |  |  |
U. S. Treasury securities | $ | 1,000 |  | $ | 1 |  | $ | — |  | $ | 1,001 |
Obligations of state and political subdivisions (municipal securities) | 1,628,759 |  | 113,179 |  | (1,951) |  | 1,739,988 |
Residential mortgage-related securities |  |  |  |
FNMA / FHLMC | 34,347 |  | 1,792 |  | — |  | 36,139 |
GNMA | 48,053 |  | 1,578 |  | — |  | 49,631 |
Commercial mortgage-related securities |  |  |  |
FNMA / FHLMC | 425,937 |  | 122 |  | (6,659) |  | 419,400 |
GNMA | 100,907 |  | 1,799 |  | (200) |  | 102,506 |
Total investment securities HTM | $ | 2,239,003 |  | $ | 118,471 |  | $ | (8,809) |  | $ | 2,348,664 |
Amortized cost and fair values of investment securities by contractual maturity | The expected maturities of AFS and HTM securities at March 31, 2022, are shown below:
| AFS | HTM
($ in Thousands) | Amortized Cost | Fair Value | Amortized Cost | Fair Value
Due in one year or less | $ | 5,167 |  | $ | 5,171 |  | $ | 18,432 |  | $ | 18,503 |
Due after one year through five years | 89,914 |  | 87,185 |  | 34,156 |  | 34,343 |
Due after five years through ten years | 378,692 |  | 374,733 |  | 163,456 |  | 164,057 |
Due after ten years | 37,386 |  | 38,617 |  | 1,481,489 |  | 1,431,903 |
Total debt securities | 511,159 |  | 505,706 |  | 1,697,534 |  | 1,648,806 |
Residential mortgage-related securities |  |  |  |
FNMA / FHLMC | 1,993,893 |  | 1,894,819 |  | 956,470 |  | 919,790 |
GNMA | 59,470 |  | 58,909 |  | 44,742 |  | 44,215 |
Private-label | — |  | — |  | 384,016 |  | 368,521 |
Commercial mortgage-related securities |  |  |  |
FNMA / FHLMC | 19,290 |  | 19,786 |  | 764,775 |  | 693,610 |
GNMA | 128,019 |  | 126,760 |  | 92,383 |  | 89,959 |
Asset backed securities |  |  |  |
FFELP | 173,068 |  | 168,978 |  | — |  | — |
SBA | 5,865 |  | 5,845 |  | — |  | — |
Total investment securities | $ | 2,890,763 |  | $ | 2,780,803 |  | $ | 3,939,920 |  | $ | 3,764,901 |
Ratio of fair value to amortized cost |  | 96.2 | % |  | 95.6 | %
Debt Securities, Held-to-maturity, Credit Quality Indicator | The following table summarizes the credit quality indicators of HTM securities at amortized cost at March 31, 2022:
($ in Thousands) | AAA | AA | A |  |  |  | Not Rated | Total
U. S. Treasury securities | $ | 998 |  | $ | — |  | $ | — |  |  |  |  | $ | — |  | $ | 998 |
Obligations of state and political subdivisions (municipal securities) | 762,066 |  | 920,883 |  | 12,692 |  |  |  |  | 895 |  | 1,696,536 |
Residential mortgage-related securities |  |  |  |  |  |  |  |
FNMA / FHLMC | 956,470 |  | — |  | — |  |  |  |  | — |  | 956,470 |
GNMA | 44,742 |  | — |  | — |  |  |  |  | — |  | 44,742 |
Private-label | 384,016 |  | — |  | — |  |  |  |  | — |  | 384,016 |
Commercial mortgage-related securities |  |  |  |  |  |  |  |
FNMA / FHLMC | 764,775 |  | — |  | — |  |  |  |  | — |  | 764,775 |
GNMA | 92,383 |  | — |  | — |  |  |  |  | — |  | 92,383 |
Total HTM securities | $ | 3,005,450 |  | $ | 920,883 |  | $ | 12,692 |  |  |  |  | $ | 895 |  | $ | 3,939,920 |
The following table summarizes the credit quality indicators of HTM securities at amortized cost at December 31, 2021:
($ in Thousands) | AAA | AA | A |  |  |  | Not Rated | Total
U. S. Treasury securities | $ | 1,000 |  | $ | — |  | $ | — |  |  |  |  | $ | — |  | $ | 1,000 |
Obligations of state and political subdivisions (municipal securities) | 702,399 |  | 914,591 |  | 10,873 |  |  |  |  | 896 |  | 1,628,759 |
Residential mortgage-related securities |  |  |  |  |  |  |  |
FNMA / FHLMC | 34,347 |  | — |  | — |  |  |  |  | — |  | 34,347 |
GNMA | 48,053 |  | — |  | — |  |  |  |  | — |  | 48,053 |
Commercial mortgage-related securities |  |  |  |  |  |  |  |
FNMA / FHLMC | 425,937 |  | — |  | — |  |  |  |  | — |  | 425,937 |
GNMA | 100,907 |  | — |  | — |  |  |  |  | — |  | 100,907 |
Total HTM securities | $ | 1,312,642 |  | $ | 914,591 |  | $ | 10,873 |  |  |  |  | $ | 896 |  | $ | 2,239,003 |
Realized gains and losses and proceeds from sale | The proceeds from the sale of AFS investment securities for the three months ended March 31, 2022 and 2021, are shown below:
| Three Months Ended Mar 31, |
($ in Thousands) | 2022 | 2021 |  |
Gross gains on AFS securities | $ | 21 |  | $ | 36 |  |  |
Gross (losses) on AFS securities | — |  | (75) |  |  |
Investment securities gains (losses), net | 21 |  | (39) |  |  |
Proceeds from sales of investment securities AFS | $ | 734 |  | $ | 51,295 |  |  |
Unrealized losses and fair value of available for sale and held to maturity securities, by investment category and time length | The following represents gross unrealized losses and the related fair value of AFS and HTM securities, aggregated by investment category and length of time individual securities have been in a continuous unrealized loss position, at March 31, 2022:
| Less than 12 months | 12 months or more | Total
($ in Thousands) | Number of Securities | Unrealized (Losses) | Fair Value | Number of Securities | Unrealized (Losses) | Fair Value | Unrealized (Losses) | Fair Value
Investment securities AFS |  |  |  |  |  |  |  |
U.S. Treasury securities | 5 |  | $ | (7,346) |  | $ | 107,050 |  | 2 |  | (850) |  | $ | 9,082 |  | $ | (8,196) |  | $ | 116,132 |
Agency securities | 1 |  | (800) |  | 14,200 |  | — |  | — |  | — |  | (800) |  | 14,200 |
Obligations of state and political subdivisions (municipal securities) | 64 |  | (195) |  | 35,501 |  | — |  | — |  | — |  | (195) |  | 35,501 |
Residential mortgage-related securities |  |  |  |  |  |  |  |
FNMA / FHLMC | 88 |  | (80,850) |  | 1,617,123 |  | 8 |  | (19,161) |  | 235,380 |  | (100,011) |  | 1,852,503 |
GNMA | 9 |  | (726) |  | 44,614 |  | — |  | — |  | — |  | (726) |  | 44,614 |
GNMA commercial mortgage-related securities | 31 |  | (1,278) |  | 113,831 |  | — |  | — |  | — |  | (1,278) |  | 113,831 |
Asset backed securities |  |  |  |  |  |  |  |
FFELP | 7 |  | (1,955) |  | 110,489 |  | 8 |  | (2,135) |  | 58,489 |  | (4,090) |  | 168,978 |
SBA | — |  | — |  | — |  | 8 |  | (53) |  | 2,763 |  | (53) |  | 2,763 |
Other debt securities | 2 |  | (27) |  | 1,973 |  | — |  | — |  | — |  | (27) |  | 1,973 |
Total | 207 |  | $ | (93,177) |  | $ | 2,044,781 |  | 26 |  | $ | (22,199) |  | $ | 305,713 |  | $ | (115,376) |  | $ | 2,350,494 |
Investment securities HTM |  |  |  |  |  |  |  |
U.S. Treasury securities | 1 |  | $ | (34) |  | $ | 964 |  | — |  | $ | — |  | $ | — |  | $ | (34) |  | $ | 964 |
Obligations of state and political subdivisions (municipal securities) | 346 |  | (79,571) |  | 576,351 |  | 5 |  | (1,325) |  | 5,100 |  | (80,896) |  | 581,451 |
Residential mortgage-related securities |  |  |  |  |  |  |  |
FNMA / FHLMC | 51 |  | (72,418) |  | 896,284 |  | — |  | — |  | — |  | (72,418) |  | 896,284 |
GNMA | 46 |  | (643) |  | 33,468 |  | — |  | — |  | — |  | (643) |  | 33,468 |
Private-label | 18 |  | (28,955) |  | 368,521 |  | — |  | — |  | — |  | (28,955) |  | 368,521 |
Commercial mortgage-related securities |  |  |  |  |  |  |  |
FNMA / FHLMC | 15 |  | (79,178) |  | 342,543 |  | 7 |  | (9,606) |  | 72,787 |  | (88,784) |  | 415,331 |
GNMA | 33 |  | (3,456) |  | 368,244 |  | — |  | — |  | — |  | (3,456) |  | 368,244 |
Total | 510 |  | $ | (264,255) |  | $ | 2,586,375 |  | 12 |  | $ | (10,930) |  | $ | 77,887 |  | $ | (275,186) |  | $ | 2,664,262 |
For comparative purposes, the following represents gross unrealized losses and the related fair value of AFS and HTM securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2021:
| Less than 12 months | 12 months or more | Total
($ in Thousands) | Number of Securities | Unrealized (Losses) | Fair Value | Number of Securities | Unrealized (Losses) | Fair Value | Unrealized (Losses) | Fair Value
Investment securities AFS |  |  |  |  |  |  |  |
U.S. Treasury securities | 7 |  | $ | (1,334) |  | $ | 122,957 |  | — |  | $ | — |  | $ | — |  | $ | (1,334) |  | $ | 122,957 |
Agency securities | 1 |  | (103) |  | 14,897 |  | — |  | — |  | — |  | (103) |  | 14,897 |
Residential mortgage-related securities |  |  |  |  |  |  |  |
FNMA / FHLMC | 74 |  | (21,249) |  | 2,172,837 |  | — |  | — |  | — |  | (21,249) |  | 2,172,837 |
Private-label | 12 |  | (2,335) |  | 248,617 |  | — |  | — |  | — |  | (2,335) |  | 248,617 |
FNMA / FHLMC commercial mortgage-related securities | 19 |  | (9,302) |  | 328,568 |  | — |  | — |  | — |  | (9,302) |  | 328,568 |
Asset backed securities |  |  |  |  |  |  |  |
FFELP | 4 |  | (256) |  | 64,282 |  | 8 |  | (867) |  | 62,576 |  | (1,123) |  | 126,858 |
SBA | — |  | — |  | — |  | 9 |  | (54) |  | 3,902 |  | (54) |  | 3,902 |
Other debt securities | 3 |  | (6) |  | 2,994 |  | — |  | — |  | — |  | (6) |  | 2,994 |
Total | 120 |  | $ | (34,586) |  | $ | 2,955,152 |  | 17 |  | $ | (920) |  | $ | 66,478 |  | $ | (35,506) |  | $ | 3,021,630 |
Investment securities HTM |  |  |  |  |  |  |  |
Obligations of state and political subdivisions (municipal securities) | 49 |  | $ | (1,951) |  | $ | 112,038 |  | — |  | $ | — |  | $ | — |  | $ | (1,951) |  | $ | 112,038 |
Commercial mortgage-related securities |  |  |  |  |  |  |  |
FNMA/FHLMC | 18 |  | (6,272) |  | 388,072 |  | 1 |  | $ | (387) |  | $ | 10,775 |  | (6,659) |  | 398,847 |
GNMA | 5 |  | (200) |  | 33,468 |  | — |  | — |  | — |  | (200) |  | 33,468 |
Total | 72 |  | $ | (8,422) |  | $ | 533,577 |  | 1 |  | $ | (387) |  | $ | 10,775 |  | $ | (8,809) |  | $ | 544,352 |

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- Definition For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27290-111563 + Details
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