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Farmer Mac Guaranteed Securities and USDA Securities - Unrealized Loss Position (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Unrealized loss position for less than 12 months |  |
Fair Value | $ 465,469 | $ 1,433,453
Unrealized Loss | (1,344) | (3,281)
Unrealized loss position for more than 12 months |  |
Fair Value | 317,212 | 315,786
Unrealized Loss | (2,569) | (2,647)
Farmer Mac Guaranteed Securities and USDA Securities [Member] |  |
Unrealized loss position for less than 12 months |  |
Fair Value | 0 | 707,813
Unrealized Loss | 0 | (2,456)
Unrealized loss position for more than 12 months |  |
Fair Value | 766,000 | 3,042,061
Unrealized Loss | (3,517) | (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 | 480,032 | 976,318
Unrealized Loss | (1,593) | (10,188)
Unrealized loss position for less than 12 months |  |
Fair Value | 921,296 | 1,480,423
Unrealized Loss | (6,351) | (9,364)
Unrealized loss position for more than 12 months |  |
Fair Value | 1,378,063 | 1,599,679
Unrealized Loss | (24,981) | (42,003)
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 | 285,968 | 2,065,743
Unrealized Loss | $ (1,924) | $ (61,531)

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