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Investment Securities (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Investment [Line Items] |  |  |
Schedule of Repurchase Agreement Counterparties with Whom Repurchase Agreements Exceed 10 Percent of Stockholders' Equity [Table Text Block] | $ 0 |  |
Percentage of amount greater than shareholder's equity | 10.00% |  |
Debt Securities, Available for Sale, Sold at Gain, Amortized Cost Amount | $ 2,300,000 |  | $ 0
Debt Securities, Available for Sale, Sold at Loss, Amortized Cost Amount | 42,300,000 | $ 291,000,000.0 |
Debt Securities, Available-for-sale, Realized Loss | 553,000 | 7,900,000 |
Gain on equity securities, net | 3,080,000 | 971,000 | 2,955,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 700,469,000 | 1,150,640,000 |
Debt Securities, Available-for-sale, Allowance for Credit Loss | 0 | 0 |
Debt Securities, Available-for-sale, Unrealized Loss Position | 786,464,000 | 1,206,855,000 |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | 80,085,000 | 87,155,000 |
Debt Securities, Available-for-sale | 996,624,000 | 1,332,842,000 |
Debt Securities, Available-for-sale, Amortized Cost | 1,076,281,000 | 1,418,770,000 |
Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount | 571,000 | 0 |
Payments to Acquire Federal Home Loan Bank Stock | 9,225,000 | $ 18,228,000 | $ 0
Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Cumulative Amount | $ 1,400,000 |  |
equity investment purchased, shares | 92,245 | 182,289 | 0
Debt Securities, Available-for-Sale, Realized Gain | $ 27,000 |  |
Equity Method Investment, Other-than-Temporary Impairment | 0 | $ 0 | $ 0
Deposits |  |  |
Investment [Line Items] |  |  |
Debt Securities, Available-for-sale, Amortized Cost | 471,200,000 | 416,000,000.0 |
Securities Sold under Agreements to Repurchase [Member] |  |  |
Investment [Line Items] |  |  |
Debt Securities, Available-for-sale | 124,100,000 | 180,800,000 |
Debt Securities, Available-for-sale, Amortized Cost | 124,100,000 | 180,800,000 |
Federal Home Loan Bank Advances [Member] |  |  |
Investment [Line Items] |  |  |
Debt Securities, Available-for-sale, Amortized Cost | 3,900,000 | 5,200,000 |
US Government-sponsored Enterprises Debt Securities |  |  |
Investment [Line Items] |  |  |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 0 |  |
Debt Securities, Available-for-sale, Unrealized Loss Position | 249,000 |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | 1,000 |  |
Debt Securities, Available-for-sale | 249,000 |  |
Debt Securities, Available-for-sale, Amortized Cost | 250,000 |  |
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |  |
Investment [Line Items] |  |  |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 510,846,000 | 634,261,000 |
Debt Securities, Available-for-sale, Unrealized Loss Position | 517,401,000 | 634,261,000 |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | 61,694,000 | 68,193,000 |
Debt Securities, Available-for-sale | 518,576,000 | 635,475,000 |
Debt Securities, Available-for-sale, Amortized Cost | 580,268,000 | 703,645,000 |
Obligations of U.S. Treasury and other U.S. Government sponsored entities |  |  |
Investment [Line Items] |  |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | 61,700,000 |  |
Investments [Member] |  |  |
Investment [Line Items] |  |  |
Gain on equity securities, net | $ 2,600,000 | $ 600,000 | $ 601,000

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