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Accumulated Other Comprehensive Loss (Components of Comprehensive Income) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2023 | Mar. 31, 2023 | Jun. 30, 2022 | Mar. 31, 2022 | Jun. 30, 2023 | Jun. 30, 2022 | Dec. 31, 2022
Net unrealized gains (losses), before tax | $ (1,522) |  | $ (12,302) |  | $ (1,429) | $ (25,398) |
Income tax benefit/(expense) related to other comprehensive income | 369 |  | 3,293 |  | 345 | 6,796 |
Other comprehensive (loss)/income, net of tax | (1,153) | $ 69 | (9,009) | $ (9,593) | (1,084) | (18,602) |
Accumulated Other Comprehensive Loss [Member] |  |  |  |  |  |  |
Unrealized net gains (losses), net of tax | (1,435) | (210) |  |  |  |  | $ (13,133)
Recognized gains (losses), net of tax | (282) | (279) |  |  |  |  | (1,421)
Other comprehensive (loss)/income, net of tax | (1,153) | 69 | (9,009) | $ (9,593) |  |  |
Investment securities- with OTTI [Member] |  |  |  |  |  |  |
Unrealized holding (losses)/gains on investments | 198 |  | (795) |  | (1,408) | (654) |
Recognized gains (losses), before tax | 51 |  | 51 |  | 101 | 101 |
Net unrealized gains (losses), before tax | 147 |  | (846) |  | (1,509) | (755) |
Unrealized tax (expense) benefit | (87) |  | 213 |  | 339 | 175 |
Income tax benefit/(expense) related to other comprehensive income | (76) |  | 227 |  | 363 | 202 |
Unrealized net gains (losses), net of tax | 111 | (1,180) | (582) |  | (1,069) | (479) | (614)
Recognized gains (losses), net of tax | 40 | 37 |  |  |  |  | 148
Other comprehensive (loss)/income, net of tax | 71 |  | (619) |  | (1,146) | (553) |
Investment securities- with OTTI [Member] | Accretable Yield in Income [Member] |  |  |  |  |  |  |
Recognized gains (losses), before tax | 51 |  | 51 |  | 101 | 101 |
Recognized tax (expense) benefit | (11) |  | (14) |  | (24) | (27) |
Recognized gains (losses), net of tax | 40 |  | 37 |  | 77 | 74 |
Investment securities- all other [Member] |  |  |  |  |  |  |
Unrealized holding (losses)/gains on investments |  |  | (5,359) |  | (881) | (16,203) |
Recognized gains (losses), before tax | (2,221) |  | (5,359) |  |  | 3 |
Net unrealized gains (losses), before tax | (2,221) |  | (5,359) |  | (881) | (7,878) |
Unrealized tax (expense) benefit |  |  | 1,435 |  |  | 4,336 |
Income tax benefit/(expense) related to other comprehensive income | 567 |  | 1,435 |  | 212 | 2,109 |
Unrealized net gains (losses), net of tax |  |  | (3,924) |  |  | (11,867) |
Other comprehensive (loss)/income, net of tax | (1,654) |  | (3,924) |  | (669) | (5,769) |
Investment securities- all other [Member] | Recognition of Gains (Losses) In Income [Member] |  |  |  |  |  |  |
Recognized gains (losses), before tax |  |  |  |  |  | 3 |
Recognized tax (expense) benefit |  |  |  |  |  | (1) |
Recognized gains (losses), net of tax |  |  |  |  |  | 2 |
Investment Securities HTM [Member] |  |  |  |  |  |  |
Unrealized holding (losses)/gains on investments |  |  |  |  |  | (8,328) |
Recognized gains (losses), before tax | (164) |  | (230) |  | (345) | (324) |
Net unrealized gains (losses), before tax | 164 |  | 230 |  | 345 | (8,004) |
Unrealized tax (expense) benefit |  |  |  |  |  | 2,228 |
Income tax benefit/(expense) related to other comprehensive income | (35) |  | (62) |  | (83) | 2,141 |
Unrealized net gains (losses), net of tax |  |  |  |  |  | (6,100) | (6,120)
Recognized gains (losses), net of tax | (129) | (133) |  |  |  |  | (551)
Other comprehensive (loss)/income, net of tax | 129 |  | 168 |  | 262 | (5,863) |
Investment Securities HTM [Member] | Amortization of Recognized Income [Member] |  |  |  |  |  |  |
Recognized gains (losses), before tax | (164) |  | (230) |  | (345) | (324) |
Recognized tax (expense) benefit | 35 |  | 62 |  | 83 | 87 |
Recognized gains (losses), net of tax | (129) |  | (168) |  | (262) | (237) |
Investment Securities Transferred From AFS to HTM |  |  |  |  |  |  |
Unrealized holding (losses)/gains on investments |  |  |  |  |  | 8,328 |
Unrealized tax (expense) benefit |  |  |  |  |  | (2,228) |
Unrealized net gains (losses), net of tax |  |  |  |  |  | 6,100 |
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] |  |  |  |  |  |  |
Net unrealized gains (losses), before tax | 204 |  | 249 |  | 16 | 1,088 |
Unrealized tax (expense) benefit | (100) |  |  |  |  |  |
Income tax benefit/(expense) related to other comprehensive income | (54) |  | (67) |  | (4) | (292) |
Unrealized net gains (losses), net of tax | 150 | (138) |  |  |  |  | 1,116
Other comprehensive (loss)/income, net of tax | 150 |  | 182 |  | 12 | 796 |
Adjustment [Member] |  |  |  |  |  |  |
Unrealized holding (losses)/gains on investments | (63) |  | (6,922) |  | 105 | (10,542) |
Recognized gains (losses), before tax | (249) |  | (279) |  | (499) | (558) |
Net unrealized gains (losses), before tax | 186 |  | (6,643) |  | 604 | (9,984) |
Adjustment [Member] | Pension [Member] |  |  |  |  |  |  |
Unrealized holding (losses)/gains on investments | (63) |  | (6,922) |  | 105 | (10,542) |
Net unrealized gains (losses), before tax | 186 |  | (6,643) |  | 604 | (9,984) |
Unrealized tax (expense) benefit | 21 |  | 1,853 |  | (24) | 2,822 |
Income tax benefit/(expense) related to other comprehensive income | (33) |  | 1,778 |  | (144) | 2,672 |
Unrealized net gains (losses), net of tax | (42) | 123 | (5,069) |  | 81 | (7,720) | 684
Recognized gains (losses), net of tax | (195) | (184) |  |  |  |  | (821)
Other comprehensive (loss)/income, net of tax | 153 |  | (4,865) |  | 460 | (7,312) |
Adjustment [Member] | SERP [Member] |  |  |  |  |  |  |
Net unrealized gains (losses), before tax | (2) |  | 67 |  | (4) | 135 |
Income tax benefit/(expense) related to other comprehensive income |  |  | (18) |  | 1 | (36) |
Unrealized net gains (losses), net of tax |  |  |  |  |  |  | 2,430
Recognized gains (losses), net of tax | 2 | $ 1 |  |  |  |  | $ (199)
Other comprehensive (loss)/income, net of tax | (2) |  | 49 |  | (3) | 99 |
Adjustment [Member] | Amortization of Unrecognized Loss [Member] | Pension [Member] |  |  |  |  |  |  |
Recognized gains (losses), before tax | (249) |  | (279) |  | (499) | (558) |
Recognized tax (expense) benefit | 54 |  | 75 |  | 120 | 150 |
Recognized gains (losses), net of tax | (195) |  | (204) |  | (379) | (408) |
Adjustment [Member] | Amortization of Unrecognized Loss [Member] | SERP [Member] |  |  |  |  |  |  |
Recognized gains (losses), before tax | 2 |  | (67) |  | 4 | (135) |
Recognized tax (expense) benefit |  |  | 18 |  | (1) | 36 |
Recognized gains (losses), net of tax | $ 2 |  | $ (49) |  | $ 3 | $ (99) |

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