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Income Taxes (Details) - USD ($)
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Income Taxes          
Valuation allowance, deferred tax asset, increase (decrease), amount     $ 66,000,000   $ 50,600,000
Income tax benefit $ 15,439,000 $ 0 15,439,000 $ 0  
States operating loss carryforwards 199,100,000   $ 199,100,000    
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 1,600,000,000   $ 1,600,000,000    
Operating loss carryforwards, subject to expiration 700,000,000   700,000,000    
Operating loss carryforwards, not subject to expiration 900,000,000   900,000,000    
Tax credit carryforward, amount 33,500,000   33,500,000    
State and Local Jurisdiction          
Income Taxes          
Operating loss carryforwards 1,100,000,000   1,100,000,000    
Operating loss carryforwards, subject to expiration 237,400,000   237,400,000    
Operating loss carryforwards, not subject to expiration $ 650,700,000   $ 650,700,000