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Income Taxes - Narrative (Details) - USD ($)
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Income Taxes      
Tax credit carryforward $ 156,000    
Amount of unrecognized tax benefits 1,437,000 $ 1,437,000 $ 255,000
Tax benefits that would impact the effective tax rate 563,000 563,000  
Interest and penalties accrued related to unrecognized tax benefits 89,000 31,000  
Penalties accrued related to unrecognized tax benefits 0 $ 0  
Federal income tax purpose      
Income Taxes      
Net operating loss carryforward 20,900,000    
California franchise tax purpose      
Income Taxes      
Net operating loss carryforward $ 5,700,000