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Securities (Schedule of Held-to-maturity Securities Reconciliation) (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Held-to-maturity |  |
Amortized Cost |  | $ 285,949
Amortized cost, post ASU 2019-04 | $ 282,313 |
Gross Unrealized Losses | (25,988) | (25,336)
Fair Value | 256,325 | 260,613
US Treasury Securities [Member] |  |
Held-to-maturity |  |
Amortized Cost |  | 150,295
Amortized cost, post ASU 2019-04 | 150,126 |
Gross Unrealized Losses | (2,925) | (5,613)
Fair Value | 147,201 | 144,682
US Government-sponsored Enterprises Debt Securities [Member] |  |
Held-to-maturity |  |
Amortized Cost |  | 50,539
Amortized cost, post ASU 2019-04 | 49,642 |
Gross Unrealized Losses | (9,013) | (8,037)
Fair Value | 40,629 | 42,502
Municipal securities [Member] |  |
Held-to-maturity |  |
Amortized Cost |  | 53,694
Amortized cost, post ASU 2019-04 | 52,947 |
Gross Unrealized Losses | (8,872) | (7,550)
Fair Value | 44,075 | 46,144
Mortgage-backed securities (GSEs) [Member] |  |
Held-to-maturity |  |
Amortized Cost |  | 31,421
Amortized cost, post ASU 2019-04 | 29,598 |
Gross Unrealized Losses | (5,178) | (4,136)
Fair Value | $ 24,420 | $ 27,285

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