Income Taxes (Details 3) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($)
Tax Credit Carryforward [Line Items]
Cumulative changes in ownership percentage	50.00%
Period of change in ownership	3 years
Californian
Tax Credit Carryforward [Line Items]
Income tax examination, year under examination	2017
U.S. Federal
Tax Credit Carryforward [Line Items]
Income tax examination, year under examination	2018
U.S. Federal | Research and development
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	$ 25.7
Tax credit carryforward expiration year	2035
California
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	$ 291.2
California | Research and development
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	$ 25.8