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v3.21.2

Securities - Amortized Cost and Fair Value (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 USD ($) item | Sep. 30, 2021 USD ($) item | Sep. 30, 2020 USD ($) | Dec. 31, 2020 USD ($)
Securities Available-for-Sale |  |  |  |
Amortized Cost | $ 695,700 | $ 695,700 |  | $ 471,961
Gross Unrealized Gains | 21,205 | 21,205 |  | 26,735
Gross Unrealized Losses | (1,717) | (1,717) |  | (2,518)
Debt Securities, Available-for-sale, Total | 715,188 | 715,188 |  | 496,178
Accrued interest receivable | 2,800 | 2,800 |  | 2,700
Other disclosures |  |  |  |
Purchases |  | 352,236 | $ 14,681 |
Proceeds from sales of securities | 26,873 | 35,075 | $ 18,006 |
Total added credit enhancement in the form of overcollaterization and/or subordination of outstanding principal | $ 15,600 | $ 15,600 |  |
Percentage of total added credit enhancement in the form of overcollaterization and/or subordination of outstanding principal |  | 10.03 |  |
Number of originators | item | 1 | 1 |  |
Minimum percentage of securities investment |  | 10.00% |  |
Securities pledged to secure deposits and for other purposes | $ 353,200 | $ 353,200 |  | 335,800
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 |  |
US Treasury Securities [Member] |  |  |  |
Securities Available-for-Sale |  |  |  |
Amortized Cost | 4,017 | $ 4,017 |  | 4,014
Gross Unrealized Gains | 53 | 53 |  | 103
Debt Securities, Available-for-sale, Total | 4,070 | 4,070 |  | 4,117
US Treasury and Government |  |  |  |
Securities Available-for-Sale |  |  |  |
Amortized Cost | 33,915 | 33,915 |  | 6,811
Gross Unrealized Losses | (340) | (340) |  | (154)
Debt Securities, Available-for-sale, Total | 33,575 | 33,575 |  | 6,657
U.S. government agencies mortgage-backed |  |  |  |
Securities Available-for-Sale |  |  |  |
Amortized Cost |  |  |  | 16,098
Gross Unrealized Gains |  |  |  | 1,112
Gross Unrealized Losses |  |  |  | (1)
Debt Securities, Available-for-sale, Total |  |  |  | 17,209
US States and Political Subdivisions Debt Securities [Member] |  |  |  |
Securities Available-for-Sale |  |  |  |
Amortized Cost | 222,833 | 222,833 |  | 229,352
Gross Unrealized Gains | 16,758 | 16,758 |  | 21,269
Gross Unrealized Losses | (639) | (639) |  | (1,362)
Debt Securities, Available-for-sale, Total | 238,952 | 238,952 |  | 249,259
Corporate Bond Securities [Member] |  |  |  |
Securities Available-for-Sale |  |  |  |
Amortized Cost | 5,000 | 5,000 |  |
Gross Unrealized Losses | (8) | (8) |  |
Debt Securities, Available-for-sale, Total | 4,992 | 4,992 |  |
Collateralized Mortgage Obligations [Member] |  |  |  |
Securities Available-for-Sale |  |  |  |
Amortized Cost | 163,756 | 163,756 |  | 53,999
Gross Unrealized Gains | 1,966 | 1,966 |  | 2,866
Gross Unrealized Losses | (308) | (308) |  | (280)
Debt Securities, Available-for-sale, Total | 165,414 | 165,414 |  | 56,585
Asset-backed Securities [Member] |  |  |  |
Securities Available-for-Sale |  |  |  |
Amortized Cost | 187,825 | 187,825 |  | 130,959
Gross Unrealized Gains | 1,646 | 1,646 |  | 1,370
Gross Unrealized Losses | (133) | (133) |  | (511)
Debt Securities, Available-for-sale, Total | 189,338 | 189,338 |  | 131,818
FFEL |  |  |  |
Securities Available-for-Sale |  |  |  |
Debt Securities, Available-for-sale, Total | 154,500 | $ 154,500 |  |
Other disclosures |  |  |  |
Percentage of outstanding principal amount of loans guaranteed by US Department of Education |  | 97 |  |
Collateralized loan obligations |  |  |  |
Securities Available-for-Sale |  |  |  |
Amortized Cost | 61,085 | $ 61,085 |  | 30,728
Gross Unrealized Gains | 18 | 18 |  | 15
Gross Unrealized Losses | (74) | (74) |  | (210)
Debt Securities, Available-for-sale, Total | 61,029 | 61,029 |  | $ 30,533
Mortgage Backed Securities, Issued by US Government Agencies [Member] |  |  |  |
Securities Available-for-Sale |  |  |  |
Amortized Cost | 17,269 | 17,269 |  |
Gross Unrealized Gains | 764 | 764 |  |
Gross Unrealized Losses | (215) | (215) |  |
Debt Securities, Available-for-sale, Total | 17,818 | 17,818 |  |
Towd Point Mortgage Trust |  |  |  |
Securities Available-for-Sale |  |  |  |
Amortized Cost | 32,836 | 32,836 |  |
Debt Securities, Available-for-sale, Total | $ 34,339 | $ 34,339 |  |

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