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Farmer Mac Guaranteed Securities and USDA Securities - Unrealized Loss Position (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Unrealized loss position for less than 12 months |  |
Fair Value | $ 1,038,301 | $ 1,433,453
Unrealized Loss | (1,591) | (3,281)
Unrealized loss position for more than 12 months |  |
Fair Value | 343,049 | 315,786
Unrealized Loss | (2,658) | (2,647)
Farmer Mac Guaranteed Securities and USDA Securities [Member] |  |
Unrealized loss position for less than 12 months |  |
Fair Value | 17,081 | 707,813
Unrealized Loss | (57) | (2,456)
Unrealized loss position for more than 12 months |  |
Fair Value | 596,546 | 3,042,061
Unrealized Loss | (1,933) | (71,719)
Institutional Credit [Member] | Farmer Mac Guaranteed Securities [Member] |  |
Unrealized loss position for less than 12 months |  |
Fair Value | 0 | 669,610
Unrealized Loss | 0 | (1,760)
Unrealized loss position for more than 12 months |  |
Fair Value | 316,340 | 976,318
Unrealized Loss | (660) | (10,188)
Unrealized loss position for less than 12 months |  |
Fair Value | 507,482 | 1,480,423
Unrealized Loss | (1,107) | (9,364)
Unrealized loss position for more than 12 months |  |
Fair Value | 1,623,361 | 1,599,679
Unrealized Loss | (37,115) | (42,003)
USDA Guarantees [Member] | Farmer Mac Guaranteed Securities [Member] |  |
Unrealized loss position for less than 12 months |  |
Fair Value | 17,081 |
Unrealized Loss | (57) |
Unrealized loss position for more than 12 months |  |
Fair Value | 0 |
Unrealized Loss | 0 |
USDA Guarantees [Member] | USDA Securities [Member] |  |
Unrealized loss position for less than 12 months |  |
Fair Value | 0 | 38,203
Unrealized Loss | 0 | (696)
Unrealized loss position for more than 12 months |  |
Fair Value | 280,206 | 2,065,743
Unrealized Loss | $ (1,273) | $ (61,531)

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