Annual report pursuant to Section 13 and 15(d)

Income Taxes (NOL) (Details)

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Income Taxes (NOL) (Details)
$ in Millions
Dec. 31, 2021
USD ($)
Operating Loss Carryforwards  
NOL, offset future federal taxable income $ 154.0
NOL, carried forward indefinitely 41.0
Federal  
Operating Loss Carryforwards  
NOL carryforwards 195.0
Federal | Research and development  
Operating Loss Carryforwards  
Tax credit carryforward 32.0
State  
Operating Loss Carryforwards  
NOL carryforwards 233.0
State | Research and development  
Operating Loss Carryforwards  
Tax credit carryforward 13.0
Foreign  
Operating Loss Carryforwards  
Tax credit carryforward $ 0.9