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Income Taxes: Net Operating Loss and and Tax Credit Carryforwards (Details) | 12 Months Ended
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Dec. 31, 2023 USD ($)
Internal Revenue Service (IRS) |
Operating Loss Carryforwards [Line Items] |
Operating Loss Carryforwards | $ 111,000,000
Operating Loss Carryforwards, With no Expiration Date | 587,300,000
Tax Credit Carryforward | 110,100,000
State and Local Jurisdiction |
Operating Loss Carryforwards [Line Items] |
Operating Loss Carryforwards | 325,300,000
Tax Credit Carryforward | 22,800,000
State and Local Jurisdiction | Valuation Allowance, Operating Loss Carryforwards |
Operating Loss Carryforwards [Line Items] |
Operating Loss Carryforwards Valuation Allowance | 1,000,000
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | 0
State and Local Jurisdiction | Valuation Allowance, Income Tax Credit Carryforwards |
Operating Loss Carryforwards [Line Items] |
Income Tax Credit carryforward, valuation allowance | $ 14,400,000

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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Operating Loss Carryforwards, With no Expiration Date + References No definition available. + Details
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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://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-3 + Details
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