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Schedule of Temporary Impairment Losses, Investments (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
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Schedule of Unrealized Losses and Estimated Fair Values [Line Items] |  |
Investment Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 745,893 | $ 3,755
Investment Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (9,038) | (10)
Investment Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 0 | 0
Investment Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0 | 0
Investment Securities, Continuous Unrealized Loss Position, Fair Value, Total | 745,893 | 3,755
Investment Securities, Continuous Unrealized Loss Position, Accumulated Loss | (9,038) | (10)
Debt Securities, Held-to-maturity | 554,225 | 361,844
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 5,499 | 8,017
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (3,904) | (10)
Securities held to maturity, fair value | 555,820 | 369,851
US Government Agencies Debt Securities Commercial |  |
Schedule of Unrealized Losses and Estimated Fair Values [Line Items] |  |
Investment Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 191,215 |
Investment Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (1,268) |
Investment Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 0 |
Investment Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0 |
Investment Securities, Continuous Unrealized Loss Position, Fair Value, Total | 191,215 |
Investment Securities, Continuous Unrealized Loss Position, Accumulated Loss | (1,268) |
Residential Mortgage Backed Securities [Member] |  |
Schedule of Unrealized Losses and Estimated Fair Values [Line Items] |  |
Investment Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 520,020 | 3,755
Investment Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (7,131) | (10)
Investment Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 0 | 0
Investment Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0 | 0
Investment Securities, Continuous Unrealized Loss Position, Fair Value, Total | 520,020 | 3,755
Investment Securities, Continuous Unrealized Loss Position, Accumulated Loss | (7,131) | (10)
Debt Securities, Held-to-maturity | 384,392 | 277,351
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 3,712 | 5,389
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (2,645) | (10)
Securities held to maturity, fair value | 385,459 | 282,730
US Government-sponsored Enterprises Debt Securities [Member] |  |
Schedule of Unrealized Losses and Estimated Fair Values [Line Items] |  |
Investment Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 22,285 |
Investment Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (462) |
Investment Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 0 |
Investment Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0 |
Investment Securities, Continuous Unrealized Loss Position, Fair Value, Total | 22,285 |
Investment Securities, Continuous Unrealized Loss Position, Accumulated Loss | (462) |
Debt Securities, Held-to-maturity | 21,747 | 0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 0 | 0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (452) | 0
Securities held to maturity, fair value | 21,295 | 0
Obligations of States and Political Subdivisions [Member] |  |
Schedule of Unrealized Losses and Estimated Fair Values [Line Items] |  |
Investment Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 7,237 |
Investment Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (138) |
Investment Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 0 |
Investment Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0 |
Investment Securities, Continuous Unrealized Loss Position, Fair Value, Total | 7,237 |
Investment Securities, Continuous Unrealized Loss Position, Accumulated Loss | (138) |
Debt Securities, Held-to-maturity | 32,925 | 34,391
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 566 | 705
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (79) | 0
Securities held to maturity, fair value | 33,412 | 35,096
Corporate Debt Securities [Member] |  |
Schedule of Unrealized Losses and Estimated Fair Values [Line Items] |  |
Investment Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 5,136 |
Investment Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (39) |
Investment Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 0 |
Investment Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0 |
Investment Securities, Continuous Unrealized Loss Position, Fair Value, Total | 5,136 |
Investment Securities, Continuous Unrealized Loss Position, Accumulated Loss | (39) |
Obligations of U.S. Government-Sponsored Enterprises - Mortgage-Backed Securities - Commercial [Member] |  |
Schedule of Unrealized Losses and Estimated Fair Values [Line Items] |  |
Debt Securities, Held-to-maturity | 8,527 | 9,737
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 275 | 344
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | 0 | 0
Securities held to maturity, fair value | $ 8,802 | $ 10,081

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