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Securities, HTM Debt Securities, Contractual Maturities (Details) $ in Thousands | Jun. 30, 2022 USD ($) Issuer | Dec. 31, 2021 USD ($) Issuer
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Held-to-maturity Securities, Debt Maturities, Amortized Cost [Abstract] |  |
Within one year | $ 62,615 |
From one to five years | 68,680 |
From five to ten years | 291,880 |
After ten years | 513,337 |
Amortized cost | 936,512 | $ 733,210
Held-to-maturity Securities, Debt Maturities, Estimated Fair Value [Abstract] |  |
Within one year | 62,624 |
From one to five years | 68,169 |
From five to ten years | 268,047 |
After ten years | 465,394 |
Fair value | $ 864,234 | $ 735,260
Number of issuers whose holdings exceeded 10% of consolidated stockholders' equity, excluding U.S. Government securities and Government-sponsored enterprises securities | Issuer | 0 | 0

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