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Farmer Mac Guaranteed Securities and USDA Securities - Schedule of On-Balance Sheet Securities (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Dec. 31, 2019 | Dec. 31, 2020
--- | --- | --- | ---
Farmer Mac Guaranteed Securities |  |  |
Held-to-maturity: |  |  |
Unpaid Principal Balance |  | $ 1,447,471 | $ 1,175,886
Amortized Cost |  | 1,447,451 | 1,175,912
Allowance for losses |  |  | (120)
Unrealized Gains |  | 16,139 | 25,259
Unrealized Losses |  | (164) | (61)
Fair Value |  |  | 1,200,990
Fair Value |  | 1,463,426 |
Available-for-sale: |  |  |
Amortized cost of available-for-sale investment securities |  |  | 6,594,992
Carrying value |  |  | 6,947,701
USDA Securities: |  |  |
Trading: |  |  |
Fair Value |  | 8,913 | 6,695
Farmer Mac Guaranteed Securities and USDA Securities |  |  |
Held-to-maturity: |  |  |
Unpaid Principal Balance |  | 3,638,142 | 3,622,436
Amortized Cost |  | 3,679,611 | 3,649,538
Allowance for losses |  |  | (120)
Unrealized Gains |  | 70,495 | 183,007
Unrealized Losses |  | (922) | (621)
Fair Value |  |  | 3,831,804
Fair Value |  | 3,749,184 | 3,831,804
Held-to-Maturity Securities | Farmer Mac Guaranteed Securities |  |  |
Held-to-maturity: |  |  |
Unamortized Premium/(Discount) |  | (20) | 26
Available-for-sale: |  |  |
Unamortized Premium/(Discount) |  | (20) | 26
Trading: |  |  |
Unamortized Premium/(Discount) |  | (20) | 26
Held-to-Maturity Securities | Farmer Mac Guaranteed Securities and USDA Securities |  |  |
Held-to-maturity: |  |  |
Unamortized Premium/(Discount) |  | 41,469 | 27,102
Available-for-sale: |  |  |
Unamortized Premium/(Discount) |  | 41,469 | 27,102
Trading: |  |  |
Unamortized Premium/(Discount) |  | 41,469 | 27,102
USDA Guarantees |  |  |
Held-to-maturity: |  |  |
Unamortized Premium/(Discount) |  | (200) | (100)
Available-for-sale: |  |  |
Unamortized Premium/(Discount) |  | (200) | (100)
Trading: |  |  |
Unamortized Premium/(Discount) |  | (200) | (100)
USDA Guarantees | Farmer Mac Guaranteed Securities |  |  |
Held-to-maturity: |  |  |
Unpaid Principal Balance |  | 31,887 | 34,456
Amortized Cost |  | 32,041 | 34,537
Allowance for losses |  |  | 0
Unrealized Gains |  | 839 | 1,273
Unrealized Losses |  | 0 | 0
Fair Value |  |  | 35,810
Fair Value |  | 32,880 |
USDA Guarantees | USDA Securities: |  |  |
Held-to-maturity: |  |  |
Unpaid Principal Balance |  | 2,190,671 | 2,446,550
Amortized Cost |  | 2,232,160 | 2,473,626
Allowance for losses |  |  | 0
Unrealized Gains |  | 54,356 | 157,748
Unrealized Losses |  | (758) | (560)
Fair Value |  |  | 2,630,814
Fair Value |  | 2,285,758 |
Trading: |  |  |
Unpaid Principal Balance |  | 8,400 | 6,413
Amortized Cost |  | 8,879 | 6,611
Allowance for losses |  |  | 0
Unrealized Gains | $ 84 | 61 |
Unrealized Losses | $ 0 | (27) |
Fair Value |  | $ 8,913 | $ 6,695
Trading securities, weighted-average yield |  | 5.20% | 5.05%
USDA Guarantees | Held-to-Maturity Securities | Farmer Mac Guaranteed Securities |  |  |
Held-to-maturity: |  |  |
Unamortized Premium/(Discount) |  | $ 154 | $ 81
Available-for-sale: |  |  |
Unamortized Premium/(Discount) |  | 154 | 81
Trading: |  |  |
Unamortized Premium/(Discount) |  | 154 | 81
USDA Guarantees | Held-to-Maturity Securities | USDA Securities: |  |  |
Held-to-maturity: |  |  |
Unamortized Premium/(Discount) |  | 41,489 | 27,076
Available-for-sale: |  |  |
Unamortized Premium/(Discount) |  | 41,489 | 27,076
Trading: |  |  |
Unamortized Premium/(Discount) |  | 41,489 | 27,076
USDA Guarantees | Trading | USDA Securities: |  |  |
Held-to-maturity: |  |  |
Unamortized Premium/(Discount) |  | 479 | 198
Available-for-sale: |  |  |
Unamortized Premium/(Discount) |  | 479 | 198
Trading: |  |  |
Unamortized Premium/(Discount) |  | 479 | 198
AgVantage Securities |  |  |
Trading: |  |  |
Available-for-sale, accrued interest excluded |  |  | 32,300
Held-to-maturity, accrued interest excluded |  |  | 44,700
Trading securities, accrued interest excluded |  |  | 200
AgVantage Securities | Farmer Mac Guaranteed Securities |  |  |
Held-to-maturity: |  |  |
Unpaid Principal Balance |  | 1,415,584 | 1,141,430
Amortized Cost |  | 1,415,410 | 1,141,375
Allowance for losses |  |  | (120)
Unrealized Gains |  | 15,300 | 23,986
Unrealized Losses |  | (164) | (61)
Fair Value |  |  | 1,165,180
Fair Value |  | 1,430,546 |
Available-for-sale: |  |  |
Unpaid Principal Balance |  | 7,017,095 | 6,593,518
Amortized cost of available-for-sale investment securities |  | 7,016,971 | 6,594,992
Allowance for losses |  |  | (310)
Unrealized Gains |  | 161,316 | 368,257
Unrealized Losses |  | (35,262) | (15,238)
Carrying value |  | 7,143,025 | 6,947,701
AgVantage Securities | Held-to-Maturity Securities | Farmer Mac Guaranteed Securities |  |  |
Held-to-maturity: |  |  |
Unamortized Premium/(Discount) |  | (174) | (55)
Available-for-sale: |  |  |
Unamortized Premium/(Discount) |  | (174) | (55)
Trading: |  |  |
Unamortized Premium/(Discount) |  | (174) | (55)
AgVantage Securities | Available-for-Sale Securities | Farmer Mac Guaranteed Securities |  |  |
Held-to-maturity: |  |  |
Unamortized Premium/(Discount) |  | (124) | 1,474
Available-for-sale: |  |  |
Unamortized Premium/(Discount) |  | (124) | 1,474
Trading: |  |  |
Unamortized Premium/(Discount) |  | $ (124) | $ 1,474

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