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Income Taxes (Narrative) (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Operating Loss Carryforwards [Line Items] |  |  |
Statutory tax rate, percentage | 21.00% | 21.00% | 21.00%
Deferred tax assets, net of operating losses | $ 7,900,000 |  |
Deferred tax assets, net of operating losses | 700,000 |  |
Undistributed earnings of foreign subsidiaries | 2,200,000 |  |
Capital loss carryforward | 110,000,000 | $ 113,700,000 |
Amended returns |  | 3,700,000 |
Deferred tax assets, capital loss carryforwards | 26,500,000 |  |
Interest and penalties recognized | $ 0 | $ 0 | $ 0
Minimum |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Statute of limitations expiration period, in years | 4 years |  |
Maximum |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Statute of limitations expiration period, in years | 10 years |  |
Federal |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Deferred tax assets, net of operating losses | $ 400,000 |  |
Deferred tax assets, net of operating losses | 100,000 |  |
Deferred tax assets, capital loss carryforwards | 22,200,000 |  |
State |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Deferred tax assets, net of operating losses | 6,600,000 |  |
Deferred tax assets, net of operating losses | 400,000 |  |
Deferred tax assets, capital loss carryforwards | 4,300,000 |  |
Foreign Tax Authority |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Deferred tax assets, net of operating losses | 900,000 |  |
Deferred tax assets, net of operating losses | $ 200,000 |  |

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