Capital (Tables)
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9 Months Ended |
Sep. 30, 2025 |
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| Banking Regulation, Total Capital [Abstract] |
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| Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations |
The following table demonstrates the Bank’s compliance with the regulatory capital requirements at September 30, 2025 and December 31, 2024. | | | | | | | | | | | | | | | | | September 30, 2025 | December 31, 2024 | | (dollars in thousands) | Required | Actual | Required | Actual | | Regulatory capital requirements: | | | | | | RBC | $ | 901,639 | | $ | 4,709,510 | | $ | 950,558 | | $ | 5,671,613 | | | Total capital-to-asset ratio | 4.0 | % | 6.0 | % | 4.0 | % | 5.3 | % | | Total regulatory capital | $ | 3,116,875 | | $ | 4,709,510 | | $ | 4,277,070 | | $ | 5,671,613 | | | Leverage ratio | 5.0 | % | 9.1 | % | 5.0 | % | 8.0 | % | | Leverage capital | $ | 3,896,094 | | $ | 7,064,264 | | $ | 5,346,337 | | $ | 8,507,419 | |
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| Schedule of Dividends Paid [Table Text Block] |
Dividends paid through the third quarter of 2025 and 2024 are presented in the table below. | | | | | | | | | | | | | | | | Dividend - Annual Yield | | 2025 | 2024 | | Membership | Activity | Membership | Activity | | February | 5.10 | % | 9.00 | % | 5.35 | % | 8.50 | % | | April | 4.60 | % | 9.00 | % | 5.60 | % | 8.75 | % | | July | 4.85 | % | 9.50 | % | 5.60 | % | 9.00 | % | | | | | |
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| Schedule of Mandatorily Redeemable Capital Stock by Maturity Date |
The following table provides the related dollar amounts for activities recorded in mandatorily redeemable capital stock during the nine months ended September 30, 2025 and 2024. | | | | | | | | | | | | Nine months ended September 30, | | | (in thousands) | 2025 | 2024 | | | Balance, beginning of the period | $ | 7,025 | | $ | 27,874 | | | | Capital stock subject to mandatory redemption reclassified from capital | — | | 5,820 | | | Redemption/repurchase of mandatorily redeemable capital stock | (940) | | (6,140) | | | | Balance, end of the period | $ | 6,085 | | $ | 27,554 | | |
The following table shows the amount of mandatorily redeemable capital stock by contractual year of redemption at September 30, 2025 and December 31, 2024. | | | | | | | | | | (in thousands) | September 30, 2025 | December 31, 2024 | | Due in 1 year or less | $ | 377 | | $ | 43 | | | Due after 1 year through 2 years | 3,608 | | 450 | | | Due after 2 years through 3 years | 967 | | 4,198 | | | Due after 3 years through 4 years | — | | 1,098 | | | | | Past contractual redemption date due to activity outstanding | 1,133 | | 1,236 | | | Total | $ | 6,085 | | $ | 7,025 | |
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| Schedule of Accumulated Other Comprehensive Income (Loss) |
The following table summarizes the changes in AOCI for the three and nine months ended September 30, 2025 and 2024. | | | | | | | | | | | | | | | (in thousands) | Net Unrealized Gains(Losses) on AFS | | | Pension and Post-Retirement Plans | Total | | June 30, 2024 | $ | (34,072) | | | | $ | (1,519) | | $ | (35,591) | | | Other comprehensive income (loss) before reclassification: | | | | | | Net unrealized gains (losses) | 30,517 | | | | — | | 30,517 | | | Reclassifications from OCI to net income: | | | | | | | | | | | | | Pension and post-retirement | — | | | | 30 | | 30 | | | September 30, 2024 | $ | (3,555) | | | | $ | (1,489) | | $ | (5,044) | | | | | | | | | June 30, 2025 | $ | (50,009) | | | | $ | (4,877) | | $ | (54,886) | | Other comprehensive income (loss) before reclassification: | | | | | | Net unrealized gains (losses) | 38,164 | | | | — | | 38,164 | | | Reclassifications from OCI to net income: | | | | | | | | | | | | Pension and post-retirement | — | | | | 148 | | 148 | | | September 30, 2025 | $ | (11,845) | | | | $ | (4,729) | | $ | (16,574) | | | | | | | | | December 31, 2023 | $ | (72,862) | | | | $ | 374 | | $ | (72,488) | | Other comprehensive income (loss) before reclassification: | | | | | | | Net unrealized gains (losses) | 69,307 | | | | — | | 69,307 | | | Reclassifications from OCI to net income: | | | | | | | | | | | | | Pension and post-retirement | — | | | | (1,863) | | (1,863) | | | September 30, 2024 | $ | (3,555) | | | | $ | (1,489) | | $ | (5,044) | | | | | | | | | December 31, 2024 | $ | (29,173) | | | | $ | (1,347) | | $ | (30,520) | | Other comprehensive income (loss) before reclassification: | | | | | | | Net unrealized gains (losses) | 17,745 | | | | — | | 17,745 | | | Reclassifications from OCI to net income: | | | | | | | Reclassification adjustment for net gains included in net income | (417) | | | | — | | (417) | | | Pension and post-retirement | — | | | | (3,382) | | (3,382) | | | September 30, 2025 | $ | (11,845) | | | | $ | (4,729) | | $ | (16,574) | |
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