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Accumulated Other Comprehensive Income (Loss) (Components of unrealized holding gains on AFS securities) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Unrealized gains (losses) arising during the period |  | $ (8,371) | $ 7,474 | $ 12,276
Reclassification adjustment for net realized (gains) losses included in net income |  | 0 | (71) | (6)
Comprehensive income (loss) before income tax (expense) benefit |  | (8,371) | 7,403 | 12,270
Tax effect | [1] | 1,759 | (1,530) | (2,458)
Unrealized gains (losses), net of tax |  | (6,612) | 5,873 | 9,812
Unrealized Holding Gains (Losses) on AFS Securities [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Unrealized gains (losses) arising during the period |  | (8,371) | 7,474 | 12,276
Reclassification adjustment for net realized (gains) losses included in net income |  | 0 | (71) | (6)
Comprehensive income (loss) before income tax (expense) benefit |  | (8,371) | 7,403 | 12,270
Tax effect |  | 1,759 | (1,530) | (2,458)
Unrealized gains (losses), net of tax |  | (6,612) | 5,873 | 9,812
Unrealized Holding Gains (Losses) on AFS Securities [Member] | Auction Rate Money Market Preferred and Preferred Stocks [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Unrealized gains (losses) arising during the period |  | 5 | 118 | 565
Reclassification adjustment for net realized (gains) losses included in net income |  | 0 | 0 | 0
Comprehensive income (loss) before income tax (expense) benefit |  | 5 | 118 | 565
Tax effect |  | 0 | 0 | 0
Unrealized gains (losses), net of tax |  | 5 | 118 | 565
Unrealized Holding Gains (Losses) on AFS Securities [Member] | All Other AFS Securities [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Unrealized gains (losses) arising during the period |  | (8,376) | 7,356 | 11,711
Reclassification adjustment for net realized (gains) losses included in net income |  | 0 | (71) | (6)
Comprehensive income (loss) before income tax (expense) benefit |  | (8,376) | 7,285 | 11,705
Tax effect |  | 1,759 | (1,530) | (2,458)
Unrealized gains (losses), net of tax |  | $ (6,617) | $ 5,755 | $ 9,247
[1] | See “Note 16 – Accumulated Other Comprehensive Income (Loss)” in the accompanying notes to consolidated financial statements for tax effect reconciliation.

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