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Investment Securities Schedule of Held-to-Maturity Securities (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
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Schedule of Held-to-maturity Securities [Line Items] |  |
Due within 1 year | $ 3,465 |
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value | 3,481 |
Due after 1 but within 5 years | 4,772 |
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value | 4,826 |
Due after 5 but within 10 years | 43,634 |
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value | 43,558 |
Due after 10 years | 3,801 |
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value | 3,842 |
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Amortized Cost | 55,672 |
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Fair Value | 55,707 |
Debt Securities, Held-to-maturity, Maturity, without Single Maturity Date, Amortized Cost | 498,553 |
Debt Securities, Held-to-maturity, Maturity, without Single Maturity Date, Fair Value | 500,113 |
Debt Securities, Held-to-maturity | 554,225 | $ 361,844
Securities held to maturity, fair value | 555,820 | $ 369,851
US Government Agencies Residential Mortgage-backed Securities [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Debt Securities, Held-to-maturity | 105,600 |
Securities held to maturity, fair value | 105,900 |
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Debt Securities, Held-to-maturity | 392,900 |
Securities held to maturity, fair value | $ 394,300 |

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