Farmer Mac Guaranteed Securities and USDA Securities - Narrative (Details) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2022 USD ($) security	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) security	Sep. 30, 2021 USD ($)	Dec. 31, 2021 security
Debt Securities, Available-for-sale [Line Items]
Release of/(provision for) losses \| $	$ (617)	$ (366)	$ 699	$ (518)
Rural Infrastructure Finance
Debt Securities, Available-for-sale [Line Items]
Release of/(provision for) losses \| $	$ (418)	$ 120	$ 1,793	$ (701)
Farmer Mac Guaranteed Securities \| AgVantage
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, securities in unrealized loss positions	97		97		13
Held-to-maturity, securities in unrealized loss positions	44		44		10
Unrealized loss position for more than 12 months, Number of securities in loss position	9		9		2
Debt securities, held-to-maturity, unrealized loss position for more than 12 months, Number of securities in loss position	4,000		4,000		0

Debt Securities, Held-to-maturity, Unrealized Loss Position More Than 12 Months, Number of Positions

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- Definition

Debt Securities, Held-to-maturity, Unrealized Loss Position, Number of Positions

+ References

No definition available.

+ Details

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- Definition

Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without an allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
-URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455

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- Definition

Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (b)(3)
-URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27290-111563

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
-URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455

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- Definition

Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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