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Resale and Repurchase Agreements Remaining Contractual Maturities of Repurchase Agreements (Details) - USD ($) $ in Thousands | Mar. 31, 2026 | Dec. 31, 2025
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U.S. government and federal agency obligations |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | $ 646,958 | $ 503,061
U.S. government and federal agency obligations | Overnight and continuous |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 646,958 | 503,061
U.S. government and federal agency obligations | Up to 90 days |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 0 | 0
U.S. government and federal agency obligations | Greater than 90 days |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 0 | 0
Government-sponsored enterprise obligations |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 10,523 | 10,539
Government-sponsored enterprise obligations | Overnight and continuous |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 10,523 | 10,539
Government-sponsored enterprise obligations | Up to 90 days |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 0 | 0
Government-sponsored enterprise obligations | Greater than 90 days |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 0 | 0
Agency mortgage-backed securities |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 1,293,598 | 1,679,278
Agency mortgage-backed securities | Overnight and continuous |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 1,262,248 | 1,647,928
Agency mortgage-backed securities | Up to 90 days |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 5,350 | 4,600
Agency mortgage-backed securities | Greater than 90 days |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 26,000 | 26,750
Non-agency mortgage-backed securities |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 21,179 | 21,970
Non-agency mortgage-backed securities | Overnight and continuous |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 21,179 | 21,970
Non-agency mortgage-backed securities | Up to 90 days |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 0 | 0
Non-agency mortgage-backed securities | Greater than 90 days |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 0 | 0
Asset-backed securities |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 387,543 | 504,709
Asset-backed securities | Overnight and continuous |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 336,321 | 453,827
Asset-backed securities | Up to 90 days |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 21,226 | 29,656
Asset-backed securities | Greater than 90 days |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 29,996 | 21,226
Other debt securities |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 87,192 | 141,459
Other debt securities | Overnight and continuous |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 87,192 | 141,459
Other debt securities | Up to 90 days |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 0 | 0
Other debt securities | Greater than 90 days |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 0 | 0
Total repurchase agreements, gross amount recognized |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 2,446,993 | 2,861,016
Total repurchase agreements, gross amount recognized | Overnight and continuous |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 2,364,421 | 2,778,784
Total repurchase agreements, gross amount recognized | Up to 90 days |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | 26,576 | 34,256
Total repurchase agreements, gross amount recognized | Greater than 90 days |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Assets Sold under Agreements to Repurchase, Repurchase Liability | $ 55,996 | $ 47,976

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