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Investments in Securities - Unrealized Gain (Loss) on Investments (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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HELD-TO-MATURITY SECURITIES: |  |
Held-to-maturity securities, Less than 12 Month, Fair Value | $ 121,173 |
Held-to-maturity securities, Less than 12 Months, Unrealized Losses | (14,278) |
Held-to-maturity securities, 12 Months or Longer, Fair Value | 56,592 |
Held-to-maturity securities, 12 Months or Longer, Unrealized Losses | (10,452) |
Held-to-maturity securities, Fair Value | 177,765 |
Held-to-maturity securities, Unrealized Losses | (24,730) |
Agency mortgage-backed securities. |  |
AVAILABLE-FOR-SALE SECURITIES: |  |
Available-for-sale securities, Less than Twelve Months, Fair Value | 221,562 | $ 47,769
Available-for-sale Securities, Less than 12 Months, Unrealized Loss | (27,597) | (388)
Available-for-sale securities, Twelve Months or Longer, Fair Value | 64,918 | 10,583
Available-for-sale Securities,12 Months or Longer, Unrealized Loss | (13,187) | (356)
Available-for-sale securities, Fair Value | 286,480 | 58,352
Available-for-sale securities, Unrealized Loss | (40,784) | (744)
HELD-TO-MATURITY SECURITIES: |  |
Held-to-maturity securities, Less than 12 Month, Fair Value | 59,218 |
Held-to-maturity securities, Less than 12 Months, Unrealized Losses | (7,766) |
Held-to-maturity securities, 12 Months or Longer, Fair Value | 7,868 |
Held-to-maturity securities, 12 Months or Longer, Unrealized Losses | (2,054) |
Held-to-maturity securities, Fair Value | 67,086 |
Held-to-maturity securities, Unrealized Losses | (9,820) |
Agency collateralized mortgage obligations |  |
AVAILABLE-FOR-SALE SECURITIES: |  |
Available-for-sale securities, Less than Twelve Months, Fair Value | 28,537 | 92,727
Available-for-sale Securities, Less than 12 Months, Unrealized Loss | (3,262) | (1,588)
Available-for-sale securities, Twelve Months or Longer, Fair Value | 40,642 | 16,298
Available-for-sale Securities,12 Months or Longer, Unrealized Loss | (8,469) | (910)
Available-for-sale securities, Fair Value | 69,179 | 109,025
Available-for-sale securities, Unrealized Loss | (11,731) | (2,498)
HELD-TO-MATURITY SECURITIES: |  |
Held-to-maturity securities, Less than 12 Month, Fair Value | 61,055 |
Held-to-maturity securities, Less than 12 Months, Unrealized Losses | (6,411) |
Held-to-maturity securities, 12 Months or Longer, Fair Value | 44,178 |
Held-to-maturity securities, 12 Months or Longer, Unrealized Losses | (7,718) |
Held-to-maturity securities, Fair Value | 105,233 |
Held-to-maturity securities, Unrealized Losses | (14,129) |
States and political subdivisions securities |  |
AVAILABLE-FOR-SALE SECURITIES: |  |
Available-for-sale securities, Less than Twelve Months, Fair Value | 44,455 | 6,537
Available-for-sale Securities, Less than 12 Months, Unrealized Loss | (2,913) | (43)
Available-for-sale securities, Twelve Months or Longer, Fair Value | 3,753 |
Available-for-sale Securities,12 Months or Longer, Unrealized Loss | (378) |
Available-for-sale securities, Fair Value | 48,208 | 6,537
Available-for-sale securities, Unrealized Loss | (3,291) | (43)
HELD-TO-MATURITY SECURITIES: |  |
Held-to-maturity securities, Less than 12 Month, Fair Value | 900 |
Held-to-maturity securities, Less than 12 Months, Unrealized Losses | (101) |
Held-to-maturity securities, 12 Months or Longer, Fair Value | 4,546 |
Held-to-maturity securities, 12 Months or Longer, Unrealized Losses | (680) |
Held-to-maturity securities, Fair Value | 5,446 |
Held-to-maturity securities, Unrealized Losses | (781) |
Small Business Administration securities |  |
AVAILABLE-FOR-SALE SECURITIES: |  |
Available-for-sale securities, Less than Twelve Months, Fair Value | 60,473 |
Available-for-sale Securities, Less than 12 Months, Unrealized Loss | (5,224) |
Available-for-sale securities, Twelve Months or Longer, Fair Value | 7,667 |
Available-for-sale Securities,12 Months or Longer, Unrealized Loss | (1,711) |
Available-for-sale securities, Fair Value | 68,140 |
Available-for-sale securities, Unrealized Loss | (6,935) |
Unrealized Losses and Estimated Fair Value |  |
AVAILABLE-FOR-SALE SECURITIES: |  |
Available-for-sale securities, Less than Twelve Months, Fair Value | 355,027 | 147,033
Available-for-sale Securities, Less than 12 Months, Unrealized Loss | (38,996) | (2,019)
Available-for-sale securities, Twelve Months or Longer, Fair Value | 116,980 | 26,881
Available-for-sale Securities,12 Months or Longer, Unrealized Loss | (23,745) | (1,266)
Available-for-sale securities, Fair Value | 472,007 | 173,914
Available-for-sale securities, Unrealized Loss | $ (62,741) | $ (3,285)

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