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Farmer Mac Guaranteed Securities and USDA Securities - Schedule of Held-to-maturity Securities (Details) - Farmer Mac Guaranteed Securities and USDA Securities - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Amortized Cost |  |
Due within one year | $ 482,593 |
Due after one year through five years | 765,529 |
Due after five years through ten years | 226,396 |
Due after ten years | 2,137,116 |
Amortized Cost | 3,611,634 | $ 3,679,611
Fair Value |  |
Due within one year | 486,460 |
Due after one year through five years | 790,138 |
Due after five years through ten years | 234,799 |
Due after ten years | 2,231,239 |
Total | $ 3,742,636 | $ 3,749,184
Weighted- Average Yield |  |
Due within one year | 2.75% |
Due after one year through five years | 3.15% |
Due after five years through ten years | 2.96% |
Due after ten years | 3.25% |
Total | 3.11% |

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