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Shareholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands | 10 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Apr. 13, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Jun. 20, 2019
Class of Stock [Line Items] |  |  |  |  |
Preferred stock, shares authorized |  | 500,000 | 500,000 |  |
Preferred stock, par value |  | $ 25 | $ 25 |  |
Preferred stock, shares issued |  | 0 | 0 |  |
Preferred stock, shares outstanding |  | 0 | 0 |  |
Price of shares repurchased |  | $ 992 | $ 3,911 | $ 51 |
2019 Repurchase Program [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Stock repurchase program, amount authorized |  |  |  |  | $ 10,000
Stock repurchase program, period in force |  | 12 months |  |  |
Shares repurchased | 2,740,643 |  |  |  |
Average price per share | $ 1.70 |  |  |  |
Price of shares repurchased | $ 4,700 |  |  |  |

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