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Income Taxes (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Federal net operating loss carryforwards	$ 60.7	$ 80.8
State net operating loss carryforwards	43.5	30.6
Federal tax loss carryforwards, subject to expiration	43.5
federal net operating loss carryforwards, carryforward indefinitely	17.2
Unrecognized tax benefits	0.0	$ 0.0
Tax attribute carryforwards cannot be utilized under IRC Section 382	$ 61.8

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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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