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Income Taxes (Details) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2024 | Dec. 31, 2023
Income Taxes |  |
Valuation allowance, deferred tax asset, increase (decrease), amount | $ 50.6 | $ 50.6
States operating loss carryforwards | $ 199.1 |
Minimum |  |
Income Taxes |  |
Number of tax years open for state tax audit (in years) | 3 years |
Maximum |  |
Income Taxes |  |
Number of tax years open for state tax audit (in years) | 5 years |
Domestic Tax Authority |  |
Income Taxes |  |
Operating loss carryforwards | $ 1,600.0 |
Operating loss carryforwards, subject to expiration | 700.0 |
Operating loss carryforwards, not subject to expiration | 900.0 |
Tax credit carryforward, amount | 33.5 |
State and Local Jurisdiction |  |
Income Taxes |  |
Operating loss carryforwards | 1,100.0 |
Operating loss carryforwards, subject to expiration | 237.4 |
Operating loss carryforwards, not subject to expiration | $ 650.7 |

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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are not subject to expiration dates. + 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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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating 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 + Details
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are subject to expiration dates. + 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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