| **Investment Securities Held to Maturity Securities by Type (Details) - USD ($) $ in Thousands**        | Mar. 31, 2022 | Dec. 31, 2021 |
|---------------------------------------------------------------------------------------------------------|---------------|---------------|
| **Schedule of Held-to-maturity Securities [Line Items]**                                                |          |          |
| Debt Securities, Held-to-maturity                                                                       | $ 512,911     | $ 541,311     |
| Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain                                        | 160           | 3,768         |
| Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss                                        | (35,983)      | (8,428)       |
| Securities held to maturity, fair value                                                                 | 477,088       | 536,651       |
| US Government Agencies Residential Mortgage-backed Securities [Member]                                  |          |          |
| **Schedule of Held-to-maturity Securities [Line Items]**                                                |          |          |
| Debt Securities, Held-to-maturity                                                                       | 2,305         | 2,409         |
| Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain                                        | 0             | 101           |
| Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss                                        | (41)          | 0             |
| Securities held to maturity, fair value                                                                 | 2,264         | 2,510         |
| US Government Agency Debt Securities Commercial [Member]                                                |          |          |
| **Schedule of Held-to-maturity Securities [Line Items]**                                                |          |          |
| Debt Securities, Held-to-maturity                                                                       | 86,281        | 91,439        |
| Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain                                        | 0             | 305           |
| Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss                                        | (6,284)       | (1,939)       |
| Securities held to maturity, fair value                                                                 | 79,997        | 89,805        |
| Residential Mortgage Backed Securities [Member]                                                         |          |          |
| **Schedule of Held-to-maturity Securities [Line Items]**                                                |          |          |
| Debt Securities, Held-to-maturity                                                                       | 366,380       | 387,848       |
| Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain                                        | 76            | 2,800         |
| Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss                                        | (26,251)      | (5,758)       |
| Securities held to maturity, fair value                                                                 | 340,205       | 384,890       |
| Obligations of U.S. Government-Sponsored Enterprises - Mortgage-Backed Securities - Commercial [Member] |          |          |
| **Schedule of Held-to-maturity Securities [Line Items]**                                                |          |          |
| Debt Securities, Held-to-maturity                                                                       | 6,672         | 7,309         |
| Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain                                        | 8             | 148           |
| Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss                                        | 0             | 0             |
| Securities held to maturity, fair value                                                                 | 6,680         | 7,457         |
| Obligations of States and Political Subdivisions [Member]                                               |          |          |
| **Schedule of Held-to-maturity Securities [Line Items]**                                                |          |          |
| Debt Securities, Held-to-maturity                                                                       | 28,290        | 29,402        |
| Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain                                        | 76            | 414           |
| Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss                                        | (1,272)       | (103)         |
| Securities held to maturity, fair value                                                                 | 27,094        | 29,713        |
| Debt Security, Government, Non-US [Member]                                                              |          |          |
| **Schedule of Held-to-maturity Securities [Line Items]**                                                |          |          |
| Debt Securities, Held-to-maturity                                                                       | 1,000         | 1,000         |
| Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain                                        | 0             | 0             |
| Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss                                        | (11)          | (3)           |
| Securities held to maturity, fair value                                                                 | $ 989         | $ 997         |

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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).
+ References
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of accumulated unrecognized gain on investment in debt security measured at amortized cost (held-to-maturity).
+ References
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| - Definition
Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity).
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| - Definition
Fair value of investment in debt security measured at amortized cost (held-to-maturity).
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No definition available.
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