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v3.23.1

Securities - Amortized Cost and Fair Value (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 USD ($) item | Dec. 31, 2022 USD ($)
Securities Available-for-Sale |  |
Amortized Cost | $ 1,560,643 | $ 1,662,819
Gross Unrealized Gains | 1,333 | 370
Gross Unrealized Losses | (106,908) | (123,830)
Securities available-for-sale | 1,455,068 | 1,539,359
Accrued interest receivable | 7,200 | 6,800
FHLB and FRB Stock |  |
FHLBC stock | 15,300 | 5,600
FRBC stock | 14,900 | 14,900
Securities pledged to secure deposits and for other purposes | 995,300 | 547,800
Other disclosures |  |
Securities available-for-sale | 1,455,068 | 1,539,359
Total added credit enhancement in the form of overcollaterization and/or subordination of outstanding principal | $ 20,300 |
Percentage of total added credit enhancement in the form of overcollaterization and/or subordination of outstanding principal | 9.29 |
Number of securities issued from originators | item | 0 |
Number of originators | item | 1 |
Minimum percentage of securities investment | 10.00% |
Reimbursement requests greater than 5 % |  |
Other disclosures |  |
Percentage of outstanding principal amount of loans guaranteed by US Department of Education | 85 |
Percent of insured loan | 5 |
Reimbursement requests greater than 9 % |  |
Other disclosures |  |
Percentage of outstanding principal amount of loans guaranteed by US Department of Education | 75 |
Percent of insured loan | 9 |
U.S. Treasury |  |
Securities Available-for-Sale |  |
Amortized Cost | $ 224,195 | 224,054
Gross Unrealized Losses | (9,461) | (11,925)
Securities available-for-sale | 214,734 | 212,129
Other disclosures |  |
Securities available-for-sale | 214,734 | 212,129
U.S. government agencies |  |
Securities Available-for-Sale |  |
Amortized Cost | 60,952 | 61,178
Gross Unrealized Losses | (4,249) | (5,130)
Securities available-for-sale | 56,703 | 56,048
Other disclosures |  |
Securities available-for-sale | 56,703 | 56,048
U.S. government agencies mortgage-backed |  |
Securities Available-for-Sale |  |
Amortized Cost | 135,504 | 140,588
Gross Unrealized Losses | (13,566) | (15,598)
Securities available-for-sale | 121,938 | 124,990
Other disclosures |  |
Securities available-for-sale | 121,938 | 124,990
States and political subdivisions |  |
Securities Available-for-Sale |  |
Amortized Cost | 243,131 | 239,999
Gross Unrealized Gains | 1,329 | 363
Gross Unrealized Losses | (10,954) | (14,234)
Securities available-for-sale | 233,506 | 226,128
Other disclosures |  |
Securities available-for-sale | 233,506 | 226,128
Corporate bonds |  |
Securities Available-for-Sale |  |
Amortized Cost | 10,000 | 10,000
Gross Unrealized Losses | (238) | (378)
Securities available-for-sale | 9,762 | 9,622
Other disclosures |  |
Securities available-for-sale | 9,762 | 9,622
Collateralized mortgage obligations |  |
Securities Available-for-Sale |  |
Amortized Cost | 510,992 | 596,336
Gross Unrealized Gains |  | 1
Gross Unrealized Losses | (56,886) | (62,569)
Securities available-for-sale | 454,106 | 533,768
Other disclosures |  |
Securities available-for-sale | 454,106 | 533,768
Asset-backed Securities |  |
Securities Available-for-Sale |  |
Amortized Cost | 196,966 | 210,388
Gross Unrealized Gains | 4 | 6
Gross Unrealized Losses | (7,217) | (8,466)
Securities available-for-sale | 189,753 | 201,928
Other disclosures |  |
Securities available-for-sale | 189,753 | 201,928
FFEL |  |
Securities Available-for-Sale |  |
Securities available-for-sale | 148,900 |
Other disclosures |  |
Securities available-for-sale | $ 148,900 |
Percentage of outstanding principal amount of loans guaranteed by US Department of Education | 97 |
Collateralized loan obligations. |  |
Securities Available-for-Sale |  |
Amortized Cost | $ 178,903 | 180,276
Gross Unrealized Losses | (4,337) | (5,530)
Securities available-for-sale | 174,566 | 174,746
Other disclosures |  |
Securities available-for-sale | $ 174,566 | $ 174,746

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