Capital (Mandatorily Redeemable Capital Stock) (Details) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2025 USD ($) Institutions $ / shares	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) Institutions $ / shares	Sep. 30, 2024 USD ($)	Dec. 31, 2024 $ / shares
Banking Regulation, Total Capital [Abstract]
Interest Expense, Capital Securities	$ 100	$ 600	$ 400	$ 1,800
Balance, beginning of the period			7,025	27,874
Capital stock subject to mandatory redemption reclassified from capital			0	5,820
Redemption/repurchase of mandatorily redeemable capital stock			(940)	(6,140)
Balance, end of the period	$ 6,085	$ 27,554	$ 6,085	$ 27,554
Capital stock, Par value Per Share \| $ / shares	$ 100		$ 100		$ 100
Financial Instruments Subject to Mandatory Redemption, Number of Institutions \| Institutions	6		6
Financial Instruments Subject to Mandatory Redemption, Due to Institution Mergers \| Institutions	4		4
Financial Instruments Subject to Mandatory Redemption, Number of Institutions, Voluntary Withdrawls \| Institutions	2		2

Financial Instruments Subject to Mandatory Redemption, Number of Institutions, Due to Institution Mergers

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- Definition

Financial Instruments Subject to Mandatory Redemption, Voluntary Withdrawals

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- Definition

Face amount or stated value per share of common stock.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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- Definition

Number of stockholders holding financial instruments subject to mandatory redemption.

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- Definition

Interest expense incurred during the reporting period on capital securities issued by the reporting entity.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(8))
-Publisher FASB
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- Definition

Value of net shares reclassified to mandatorily redeemable capital stock.

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- Definition

The cash outflow related to equity securities that embody an unconditional obligation requiring the issuer to redeem the securities by transferring the assets at a specified or determinable date (or dates) that is (or are) initially more than one year (or the normal operating cycle, if longer) from the issuance date, or upon an event that is certain to occur beyond one year (or the normal operating cycle, if longer) from the issuance date.

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-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 15
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-15

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- Definition

Amount that would be paid, determined under the conditions specified in the contract, if the holder of the share has the right to redeem the shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 480
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 64
-Publisher FASB
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