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Accumulated Other Comprehensive Loss (Schedule of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Balance | $ 141,900 | $ 131,047 | $ 131,047
Balance | 137,078 | 129,189 | 141,900
Accumulated Other Comprehensive Loss [Member] |  |  |
Balance | (27,314) | (28,863) | (28,863)
Other comprehensive income/(loss) before reclassifications | (9,877) |  | 409
Amounts reclassified from accumulated other comprehensive loss | 284 |  | 1,140
Balance | (36,907) | (33,198) | (27,314)
Investment securities- with OTTI [Member] |  |  |
Balance | (949) | (3,277) | (3,277)
Other comprehensive income/(loss) before reclassifications | 103 | 266 | 2,475
Amounts reclassified from accumulated other comprehensive loss | (37) |  | (147)
Balance | (883) |  | (949)
Investment securities- all other [Member] |  |  |
Other comprehensive income/(loss) before reclassifications | (7,943) | (5,202) |
Investment securities- all other - excluding transfers [Member] |  |  |
Balance | (5,749) | (25) | (25)
Other comprehensive income/(loss) before reclassifications | (1,843) |  | (5,611)
Amounts reclassified from accumulated other comprehensive loss | (2) |  | (113)
Balance | (7,594) |  | (5,749)
Investment Securities HTM [Member] |  |  |
Balance | (134) | (315) | (315)
Other comprehensive income/(loss) before reclassifications | (6,100) |  |
Amounts reclassified from accumulated other comprehensive loss | 69 |  | 181
Balance | (6,165) |  | (134)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] |  |  |
Balance | (319) | (954) | (954)
Other comprehensive income/(loss) before reclassifications | 614 |  | 635
Balance | 295 |  | (319)
Pension Plan [Member] | Pension [Member] |  |  |
Balance | (18,108) | (22,630) | (22,630)
Other comprehensive income/(loss) before reclassifications | (2,651) | (139) | 3,431
Amounts reclassified from accumulated other comprehensive loss | 204 |  | 1,091
Balance | (20,555) |  | (18,108)
Pension Plan [Member] | SERP [Member] |  |  |
Balance | (2,055) | $ (1,662) | (1,662)
Other comprehensive income/(loss) before reclassifications |  |  | (521)
Amounts reclassified from accumulated other comprehensive loss | 50 |  | 128
Balance | $ (2,005) |  | $ (2,055)

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