Income Taxes (Details) $ in Millions	Dec. 31, 2021 USD ($)
Income Taxes
NOL for Federal tax	$ 123.8
NOL for State tax	25.2
NOL for Foreign tax	1.4
Various tax credits, amount	$ 8.6

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign operating loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards.

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