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Farmer Mac Guaranteed Securities and USDA Securities - Schedule of Held-to-maturity Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Institutional Credit |  |
Weighted- Average Yield |  |
Held-to-maturity, accrued interest excluded | $ 37,500 | $ 44,700
Farmer Mac Guaranteed Securities and USDA Securities |  |
Amortized Cost |  |
Due within one year | 1,442,247 |
Due after one year through five years | 834,861 |
Due after five years through ten years | 248,841 |
Due after ten years | 2,179,744 |
Amortized Cost | 4,705,693 | $ 3,649,538
Fair Value |  |
Due within one year | 1,443,316 |
Due after one year through five years | 840,125 |
Due after five years through ten years | 257,529 |
Due after ten years | 2,257,175 |
Total | $ 4,798,145 |
Weighted- Average Yield |  |
Due within one year | 0.74% |
Due after one year through five years | 2.08% |
Due after five years through ten years | 2.79% |
Due after ten years | 3.17% |
Total | 2.19% |

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