FAIR VALUE DISCLOSURES - Quantitative Information (Details) $ in Thousands	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Farmer Mac Guaranteed Securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Available-for-sale, at fair value	$ 5,399,151
Floating interest rate \| Floating rate auction-rate certificates backed by Government guaranteed student loans
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Available-for-sale, at fair value	19,478	$ 19,082
Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Guarantee Asset	5,559	5,831
Recurring \| Farmer Mac Guaranteed Securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Available-for-sale, at fair value	5,399,151	5,532,479
Recurring \| Floating interest rate \| Floating rate auction-rate certificates backed by Government guaranteed student loans
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Available-for-sale, at fair value	19,478	19,082
Recurring \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Guarantee Asset	5,559	5,831
Recurring \| Level 3 \| Farmer Mac Guaranteed Securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Available-for-sale, at fair value	5,399,151	5,532,479
Recurring \| Level 3 \| Floating interest rate \| Floating rate auction-rate certificates backed by Government guaranteed student loans
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Available-for-sale, at fair value	19,478	19,082
Farmer Mac Guaranteed Securities \| Farmer Mac Guaranteed Securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Available-for-sale, at fair value	9,300	9,800
USDA Securities: \| Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Trading	1,026	1,241
USDA Securities: \| Recurring \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Trading	1,026	1,241
AgVantage Securities \| Recurring \| Farmer Mac Guaranteed Securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Available-for-sale, at fair value	5,389,841	5,522,712
AgVantage Securities \| Recurring \| Level 3 \| Farmer Mac Guaranteed Securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Available-for-sale, at fair value	5,389,841	5,522,712
Farmer Mac Guaranteed USDA Securities \| Recurring \| Farmer Mac Guaranteed Securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Available-for-sale, at fair value	9,310	9,767
Farmer Mac Guaranteed USDA Securities \| Recurring \| Level 3 \| Farmer Mac Guaranteed Securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Available-for-sale, at fair value	9,310	9,767
USDA Securities \| USDA Securities: \| Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Trading	1,026	1,241
USDA Securities \| USDA Securities: \| Recurring \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Trading	$ 1,026	$ 1,241
Range of broker quotes \| Minimum \| Floating rate auction-rate certificates backed by Government guaranteed student loans \| Indicative bids \| Recurring \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities, measurement input	0.990	0.970
Range of broker quotes \| Maximum \| Floating rate auction-rate certificates backed by Government guaranteed student loans \| Indicative bids \| Recurring \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities, measurement input	0.990	0.970
Range of broker quotes \| Weighted Average \| Floating rate auction-rate certificates backed by Government guaranteed student loans \| Indicative bids \| Recurring \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities, measurement input	0.990	0.970
Discount rate \| Discounted cash flow \| Recurring \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Guarantee asset, measurement input	0.076
Discount rate \| Farmer Mac Guaranteed USDA Securities \| Farmer Mac Guaranteed Securities \| Discounted cash flow \| Recurring \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities, measurement input	0.076
Discount rate \| Minimum \| Discounted cash flow \| Recurring \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Guarantee asset, measurement input		0.083
Discount rate \| Minimum \| AgVantage Securities \| Farmer Mac Guaranteed Securities \| Discounted cash flow \| Recurring \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities, measurement input	0.051	0.047
Discount rate \| Minimum \| Farmer Mac Guaranteed USDA Securities \| Farmer Mac Guaranteed Securities \| Discounted cash flow \| Recurring \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities, measurement input		0.083
Discount rate \| Minimum \| USDA Securities \| USDA Securities: \| Discounted cash flow \| Recurring \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
USDA securities, measurement input	0.059	0.054
Discount rate \| Maximum \| AgVantage Securities \| Farmer Mac Guaranteed Securities \| Discounted cash flow \| Recurring \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities, measurement input	0.060	0.054
Discount rate \| Maximum \| USDA Securities \| USDA Securities: \| Discounted cash flow \| Recurring \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
USDA securities, measurement input	0.060	0.054
Discount rate \| Weighted Average \| AgVantage Securities \| Farmer Mac Guaranteed Securities \| Discounted cash flow \| Recurring \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities, measurement input	0.054	0.050
Discount rate \| Weighted Average \| USDA Securities \| USDA Securities: \| Discounted cash flow \| Recurring \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
USDA securities, measurement input	0.059	0.054
CPR \| Discounted cash flow \| Recurring \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Guarantee asset, measurement input	0.03	0.03
CPR \| Farmer Mac Guaranteed USDA Securities \| Farmer Mac Guaranteed Securities \| Discounted cash flow \| Recurring \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities, measurement input	0.03	0.03
CPR \| Minimum \| USDA Securities \| USDA Securities: \| Discounted cash flow \| Recurring \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
USDA securities, measurement input	0.12	0.12
CPR \| Maximum \| USDA Securities \| USDA Securities: \| Discounted cash flow \| Recurring \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
USDA securities, measurement input	0.12	0.12
CPR \| Weighted Average \| USDA Securities \| USDA Securities: \| Discounted cash flow \| Recurring \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
USDA securities, measurement input	0.12	0.12

Guarantee Asset

No definition available.

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- Definition

Guarantee Asset, Measurement Input

+ References

No definition available.

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- Definition

Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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- Definition

Value of input used to measure investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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- Definition

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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.

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