Revision of Prior Period Financial Statements - Schedule of Revised Consolidated Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Interest income:
Farmer Mac Guaranteed Securities and USDA Securities	$ 144,761		$ 51,616		$ 281,298	$ 94,536
Total interest income	343,832		139,448		659,104	255,331
Net interest income	78,677		63,914		157,735	129,452
Non-interest income/(expense):
Gains on financial derivatives	1,693		3,791		2,092	20,779
Non-interest income	5,871		7,675		11,226	29,080
Income before income taxes	59,287		52,913		119,440	118,412
Income tax expense	12,075		11,058		25,193	25,104
Net income	47,212	$ 47,035	41,855	$ 51,453	94,247	93,308
Net income attributable to common stockholders	$ 40,421		35,063		$ 80,665	79,725
As previously Reported
Interest income:
Farmer Mac Guaranteed Securities and USDA Securities			57,104			96,361
Total interest income			144,936			257,156
Net interest income			69,402			131,277
Non-interest income/(expense):
Gains on financial derivatives			3,418			19,492
Non-interest income			7,302			27,793
Income before income taxes			58,028			118,950
Income tax expense			12,132			25,217
Net income			45,896	47,837		93,733
Net income attributable to common stockholders			39,104			80,150
Adjustments
Interest income:
Farmer Mac Guaranteed Securities and USDA Securities			(5,488)			(1,825)
Total interest income			(5,488)			(1,825)
Net interest income			(5,488)			(1,825)
Non-interest income/(expense):
Gains on financial derivatives			373			1,287
Non-interest income			373			1,287
Income before income taxes			(5,115)			(538)
Income tax expense			(1,074)			(113)
Net income			(4,041)	$ 3,616		(425)
Net income attributable to common stockholders			$ (4,041)			$ (425)