Annual report pursuant to Section 13 and 15(d)

Income Taxes (Narrative) (Details)

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Income Taxes (Narrative) (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Deferred tax assets, valuation allowance $ 94,751,000 $ 67,073,000
Tax credits, expiration date Dec. 31, 2033  
Interest or penalties $ 0  
Domestic Tax Authority [Member]    
Operating loss carryforwards without expiration 168,100,000  
Operating Loss Carryforwards 191,700,000  
Income tax credits 8,300,000  
State and Local Jurisdiction [Member]    
Operating loss carryforwards without expiration 94,000  
Operating Loss Carryforwards 410,000,000.0  
Income tax credits $ 1,800,000