FARMER MAC GUARANTEED SECURITIES AND USDA SECURITIES - Schedule of Available-for-Sale Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
AgVantage
Weighted- Average Yield
Available-for-sale, accrued interest excluded	$ 63,900	$ 57,500
Farmer Mac Guaranteed Securities
Amortized Cost
Due within one year	975,356
Due after one year through five years	2,952,494
Due after five years through ten years	1,070,000
Due after ten years	944,619
Available-for-sale, amortized cost	5,942,469
Fair Value
Due within one year	972,539
Due after one year through five years	2,913,050
Due after five years through ten years	992,839
Due after ten years	853,075
Total fair value	$ 5,731,503
Weighted- Average Yield
Due within one year	4.47%
Due after one year through five years	3.77%
Due after five years through ten years	3.53%
Due after ten years	4.00%
Weighted-average yield	3.87%