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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, 2022 | Mar. 31, 2022 | Jun. 30, 2021 | Mar. 31, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Net unrealized gains (losses), before tax | $ (12,302) |  | $ 6,457 |  | $ (25,398) | $ 540 |
Net unrealized tax (expense) benefit | 3,293 |  | (1,727) |  | 6,796 | (145) |
Other comprehensive loss, net of tax | (9,009) | $ (9,593) | 4,730 | $ (4,335) | (18,602) | 395 |
Pension [Member] |  |  |  |  |  |  |
Unrealized holding (losses)/gains on investments | (6,922) |  | 1,280 |  |  |  |
Net unrealized gains (losses), before tax | (6,643) |  | 1,652 |  |  |  |
Unrealized tax (expense) benefit | 1,853 |  | (342) |  |  |  |
Net unrealized tax (expense) benefit | 1,778 |  | (442) |  |  |  |
Unrealized net gains (losses), net of tax | (5,069) |  | 938 |  |  |  |
Other comprehensive loss, net of tax | (4,865) |  | 1,210 |  |  |  |
SERP [Member] |  |  |  |  |  |  |
Net unrealized gains (losses), before tax | 67 |  |  |  |  |  |
Net unrealized tax (expense) benefit | (18) |  |  |  |  |  |
Other comprehensive loss, net of tax | 49 |  |  |  |  |  |
Reclassification out of Accumulated Other Comprehensive Loss [Member] | Amortization of Unrecognized Loss [Member] | Pension [Member] |  |  |  |  |  |  |
Recognized gains (losses), before tax | (279) |  | (372) |  |  |  |
Recognized tax (expense) benefit | 75 |  | 100 |  |  |  |
Recognized gains (losses), net of tax | (204) |  | (272) |  |  |  |
Reclassification out of Accumulated Other Comprehensive Loss [Member] | Amortization of Unrecognized Loss [Member] | SERP [Member] |  |  |  |  |  |  |
Recognized gains (losses), before tax | (67) |  | (73) |  |  |  |
Recognized tax (expense) benefit | 18 |  | 18 |  |  |  |
Recognized gains (losses), net of tax | (49) |  | (55) |  |  |  |
Accumulated Other Comprehensive Loss [Member] |  |  |  |  |  |  |
Unrealized net gains (losses), net of tax | (9,393) | (9,877) |  |  |  |  | $ 409
Recognized gains (losses), net of tax | (384) | (284) |  |  |  |  | (1,140)
Other comprehensive loss, net of tax | (9,009) | (9,593) | 4,730 | $ (4,335) |  |  |
Investment securities- with OTTI [Member] |  |  |  |  |  |  |
Unrealized holding (losses)/gains on investments | (795) |  | 2,160 |  | (654) | 2,523 |
Recognized gains (losses), before tax | 51 |  | 51 |  | 101 | 101 |
Net unrealized gains (losses), before tax | (846) |  | 2,109 |  | (755) | 2,422 |
Unrealized tax (expense) benefit | 213 |  | (579) |  | 175 | (676) |
Net unrealized tax (expense) benefit | 227 |  | (565) |  | 202 | (649) |
Unrealized net gains (losses), net of tax | (582) | 103 | 1,581 |  | (479) | 1,847 | 2,475
Recognized gains (losses), net of tax | 37 | 37 |  |  |  |  | 147
Other comprehensive loss, net of tax | (619) |  | 1,544 |  | (553) | 1,773 |
Investment securities- with OTTI [Member] | Accretable Yield in Income [Member] |  |  |  |  |  |  |
Recognized gains (losses), before tax |  |  |  |  | 101 | 101 |
Recognized tax (expense) benefit |  |  |  |  | (27) | (27) |
Recognized gains (losses), net of tax |  |  |  |  | 74 | 74 |
Investment securities- with OTTI [Member] | Reclassification out of Accumulated Other Comprehensive Loss [Member] | Accretable Yield in Income [Member] |  |  |  |  |  |  |
Recognized gains (losses), before tax | 51 |  | 51 |  |  |  |
Recognized tax (expense) benefit | (14) |  | (14) |  |  |  |
Recognized gains (losses), net of tax | 37 |  | 37 |  |  |  |
Investment securities- all other [Member] |  |  |  |  |  |  |
Unrealized holding (losses)/gains on investments | (5,359) |  | 2,778 |  | (16,203) | (4,327) |
Recognized gains (losses), before tax |  |  | 154 |  | 3 | 154 |
Net unrealized gains (losses), before tax | (5,359) |  | 2,624 |  | (7,878) | (4,481) |
Unrealized tax (expense) benefit | 1,435 |  | (744) |  | 4,336 | 1,159 |
Net unrealized tax (expense) benefit | 1,435 |  | (703) |  | 2,109 | 1,200 |
Unrealized net gains (losses), net of tax | (3,924) |  | 2,034 |  | (11,867) | (3,168) |
Other comprehensive loss, net of tax | (3,924) |  | 1,921 |  | (5,769) | (3,281) |
Investment securities- all other [Member] | Recognition of Gains (Losses) In Income [Member] |  |  |  |  |  |  |
Recognized gains (losses), before tax |  |  |  |  | 3 | 154 |
Recognized tax (expense) benefit |  |  |  |  | (1) | (41) |
Recognized gains (losses), net of tax |  |  |  |  | 2 | 113 |
Investment securities- all other [Member] | Reclassification out of Accumulated Other Comprehensive Loss [Member] | Recognition of Gains (Losses) In Income [Member] |  |  |  |  |  |  |
Recognized gains (losses), before tax |  |  | 154 |  |  |  |
Recognized tax (expense) benefit |  |  | (41) |  |  |  |
Recognized gains (losses), net of tax |  |  | 113 |  |  |  |
Investment Securities HTM [Member] |  |  |  |  |  |  |
Recognized gains (losses), before tax | (230) |  | (46) |  | (324) | (108) |
Net unrealized gains (losses), before tax | 230 |  | 46 |  | (8,004) | 108 |
Net unrealized tax (expense) benefit | (62) |  | (12) |  | 2,141 | (29) |
Unrealized net gains (losses), net of tax |  | (6,100) |  |  |  |  |
Recognized gains (losses), net of tax | (168) | (69) |  |  |  |  | (181)
Other comprehensive loss, net of tax | 168 |  | 34 |  | (5,863) | 79 |
Investment Securities HTM [Member] | Amortization of Recognized Income [Member] |  |  |  |  |  |  |
Recognized gains (losses), before tax |  |  |  |  | (324) | (108) |
Recognized tax (expense) benefit |  |  |  |  | 87 | 29 |
Recognized gains (losses), net of tax |  |  |  |  | (237) | (79) |
Investment Securities HTM [Member] | Reclassification out of Accumulated Other Comprehensive Loss [Member] | Amortization of Recognized Income [Member] |  |  |  |  |  |  |
Recognized gains (losses), before tax | (230) |  | (46) |  |  |  |
Recognized tax (expense) benefit | 62 |  | 12 |  |  |  |
Recognized gains (losses), net of tax | (168) |  | (34) |  |  |  |
Investment Securities Transferred From AFS to HTM [Member] |  |  |  |  |  |  |
Unrealized holding (losses)/gains on investments |  |  |  |  | 8,328 |  |
Unrealized tax (expense) benefit |  |  |  |  | (2,228) |  |
Unrealized net gains (losses), net of tax |  |  |  |  | 6,100 |  |
Investment Securities Transferred to HTM [Member] |  |  |  |  |  |  |
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] |  |  |  |  |  |  |
Unrealized holding (losses)/gains on investments | 249 |  | (47) |  | 1,088 |  |
Net unrealized gains (losses), before tax |  |  |  |  |  | 507 |
Unrealized tax (expense) benefit | (67) |  | 13 |  | (292) |  |
Net unrealized tax (expense) benefit |  |  |  |  |  | (136) |
Unrealized net gains (losses), net of tax | 182 | 614 | (34) |  |  |  | 635
Other comprehensive loss, net of tax |  |  |  |  | 796 | 371 |
Adjustment [Member] |  |  |  |  |  |  |
Unrealized holding (losses)/gains on investments | (6,922) |  | 1,280 |  | (10,542) | 1,090 |
Recognized gains (losses), before tax | (279) |  | (372) |  | (558) | (744) |
Net unrealized gains (losses), before tax | (6,643) |  | 1,652 |  | (9,984) | 1,834 |
Adjustment [Member] | Pension [Member] |  |  |  |  |  |  |
Unrealized holding (losses)/gains on investments |  |  |  |  | (10,542) | 1,090 |
Net unrealized gains (losses), before tax |  |  |  |  | (9,984) | 1,834 |
Unrealized tax (expense) benefit |  |  |  |  | 2,822 | (291) |
Net unrealized tax (expense) benefit |  |  |  |  | 2,672 | (491) |
Unrealized net gains (losses), net of tax | (5,069) | (2,651) |  |  | (7,720) | 799 | 3,431
Recognized gains (losses), net of tax | (204) | (204) |  |  |  |  | (1,091)
Other comprehensive loss, net of tax |  |  |  |  | (7,312) | 1,343 |
Adjustment [Member] | SERP [Member] |  |  |  |  |  |  |
Unrealized holding (losses)/gains on investments |  |  |  |  |  |  |
Net unrealized gains (losses), before tax |  |  | 73 |  | 135 | 150 |
Unrealized tax (expense) benefit |  |  |  |  |  |  |
Net unrealized tax (expense) benefit |  |  | (18) |  | (36) | (40) |
Unrealized net gains (losses), net of tax |  |  |  |  |  |  | (521)
Recognized gains (losses), net of tax | $ (49) | $ (50) |  |  |  |  | $ (128)
Other comprehensive loss, net of tax |  |  | $ 55 |  | 99 | 110 |
Adjustment [Member] | Amortization of Unrecognized Loss [Member] | Pension [Member] |  |  |  |  |  |  |
Recognized gains (losses), before tax |  |  |  |  | (558) | (744) |
Recognized tax (expense) benefit |  |  |  |  | 150 | 200 |
Recognized gains (losses), net of tax |  |  |  |  | (408) | (544) |
Adjustment [Member] | Amortization of Unrecognized Loss [Member] | SERP [Member] |  |  |  |  |  |  |
Recognized gains (losses), before tax |  |  |  |  | (135) | (150) |
Recognized tax (expense) benefit |  |  |  |  | 36 | 40 |
Recognized gains (losses), net of tax |  |  |  |  | $ (99) | $ (110) |

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