Income Tax Expense - NOL and Tax Credit Carryforwards (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Federal
NOL and Tax Credit Carryforwards [Line Items]
Tax Credit Carryforwards	$ 424,700,000	$ 480,400,000
Operating loss carryforwards, valuation allowance	0
State
NOL and Tax Credit Carryforwards [Line Items]
Tax Credit Carryforwards	19,900,000	21,500,000
State NOL Carryforwards	258,800,000	280,900,000
Operating loss carryforwards, valuation allowance	9,700,000
Tax credit carryforward, valuation allowance	$ 42,300,000	$ 55,400,000

NOL and Tax Credit Carryforwards [Line Items]

No definition available.

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- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-3

+ Details

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- Definition

The portion of the valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from net operating loss carryforwards for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-2

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- Definition

The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

+ Details

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- Definition

Amount of valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from tax credit carryforwards for which it is more likely than not that a tax benefit will not be realized.

+ References

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