Capital (Tables)
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6 Months Ended |
Jun. 30, 2026 |
| 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 June 30, 2026 and December 31, 2025. | | | | | | | | | | | | | | | | June 30, 2026 | December 31, 2025 | | (dollars in thousands) | Required | Actual | Required | Actual | | Regulatory capital requirements: | | | | | | RBC | $ | 995,565 | | $ | 6,251,213 | | $ | 857,373 | | $ | 4,550,222 | | | Total capital-to-asset ratio | 4.0 | % | 5.3 | % | 4.0 | % | 6.2 | % | | Total regulatory capital | $ | 4,740,614 | | $ | 6,251,213 | | $ | 2,932,689 | | $ | 4,550,222 | | | Leverage ratio | 5.0 | % | 7.9 | % | 5.0 | % | 9.3 | % | | Leverage capital | $ | 5,925,768 | | $ | 9,376,820 | | $ | 3,665,861 | | $ | 6,825,333 | |
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| Schedule of Dividends Paid [Table Text Block] |
Dividends paid through the second quarter of 2026 and 2025 are presented in the table below. | | | | | | | | | | | | | | | | Dividend - Annual Yield | | 2026 | 2025 | | Membership | Activity | Membership | Activity | | February | 4.85 | % | 9.50 | % | 5.10 | % | 9.00 | % | | April | 4.85 | % | 9.50 | % | 4.60 | % | 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 six months ended June 30, 2026 and 2025. | | | | | | | | | | | Six months ended June 30, | | | (in thousands) | 2026 | 2025 | | | Balance, beginning of the period | $ | 12,344 | | $ | 7,025 | | | | Capital stock subject to mandatory redemption reclassified from capital | 12,886 | | — | | | Redemption/repurchase of mandatorily redeemable capital stock | (11,851) | | (794) | | | | Balance, end of the period | $ | 13,379 | | $ | 6,231 | | |
The following table shows the amount of mandatorily redeemable capital stock by contractual year of redemption at June 30, 2026 and December 31, 2025. | | | | | | | | | | (in thousands) | June 30, 2026 | December 31, 2025 | | Due in 1 year or less | $ | 435 | | $ | 377 | | | Due after 1 year through 2 years | 4,019 | | 3,543 | | | Due after 2 years through 3 years | — | | 946 | | | Due after 3 years through 4 years | — | | — | | | Due after 4 years through 5 years | 7,893 | | 6,381 | | Past contractual redemption date due to activity outstanding | 1,032 | | 1,097 | | | Total | $ | 13,379 | | $ | 12,344 | |
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| Schedule of Accumulated Other Comprehensive Income (Loss) |
The following table summarizes the ending balance for each component of the AOCI at June 30, 2026 and June 30, 2025. | | | | | | | | | | AOCI (in thousands) | June 30, 2026 | June 30, 2025 | | Net unrealized gains (losses) on AFS securities | 41,437 | | (50,009) | | | Pension and post-retirement | (1,225) | | (4,877) | | | Total | $ | 40,212 | | $ | (54,886) | |
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