FARMER MAC GUARANTEED SECURITIES AND USDA SECURITIES - Schedule of Available-for-Sale Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
AgVantage
Weighted- Average Yield
Available-for-sale, accrued interest excluded	$ 59,300	$ 57,500
Farmer Mac Guaranteed Securities
Amortized Cost
Due within one year	781,516
Due after one year through five years	2,947,494
Due after five years through ten years	1,180,000
Due after ten years	950,620
Available-for-sale, amortized cost	5,859,630
Fair Value
Due within one year	778,790
Due after one year through five years	2,892,428
Due after five years through ten years	1,089,435
Due after ten years	862,731
Total fair value	$ 5,623,384
Weighted- Average Yield
Due within one year	4.55%
Due after one year through five years	3.77%
Due after five years through ten years	3.55%
Due after ten years	3.99%
Weighted-average yield	3.86%