General form of registration statement for all companies including face-amount certificate companies

Income Taxes - Narrative (Details)

v3.21.2
Income Taxes - Narrative (Details) - USD ($)
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Jun. 30, 2021
Dec. 31, 2018
Income Tax Disclosure [Abstract]        
Increase in valuation allowance $ 5,800,000 $ 7,900,000    
Income Tax Contingency [Line Items]        
Increase in unrecognized tax benefits 431,000 501,000    
Unrecognized tax benefits 2,860,000 2,429,000 $ 0 $ 1,928,000
Accrued interest and penalties related to uncertain tax positions 0   $ 0  
Federal        
Income Tax Contingency [Line Items]        
NOLs 131,200,000 110,200,000    
Net operating loss that can be carried forward indefinitely 85,300,000      
State        
Income Tax Contingency [Line Items]        
NOLs 118,500,000 $ 108,200,000    
Research and Development | Federal        
Income Tax Contingency [Line Items]        
Tax credit carryforwards 4,400,000      
Research and Development | State        
Income Tax Contingency [Line Items]        
Tax credit carryforwards $ 4,300,000