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Income Taxes (Narrative) (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Operating Loss Carryforwards [Line Items] |  |  |
Statutory tax rate, percentage | 21.00% | 21.00% | 21.00%
Deferred tax assets, net of operating losses | $ 17,500,000 |  |
Deferred tax assets, net of operating losses | 1,100,000 |  |
Undistributed earnings of foreign subsidiaries | 1,400,000 |  |
Capital loss carryforward | 110,000,000 |  | $ 113,700,000
Amended returns |  |  | 3,700,000
Deferred tax assets, capital loss carryforwards | 26,527,000 | $ 26,490,000 |
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 | $ 300,000 |  |
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 | 16,500,000 |  |
Deferred tax assets, net of operating losses | 800,000 |  |
Deferred tax assets, capital loss carryforwards | 4,300,000 |  |
Foreign Tax Authority |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Deferred tax assets, net of operating losses | 700,000 |  |
Deferred tax assets, net of operating losses | $ 200,000 |  |

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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible capital loss carryforwards. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-6 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-8 + Details
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiary and other recognized entity not within country of domicile. Includes, but is not limited to, other basis differences. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-6 + Details
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