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

Income Taxes - Additional Information (Detail)

v3.21.2
Income Taxes - Additional Information (Detail) - USD ($)
 6 Months Ended 12 Months Ended
Jun. 30, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Effective income tax rate reconciliation, Fedaral statutory tax rate   21.00% 21.00%  
Operating loss carryforwards   $ 53,200,000    
Unrecognized tax benefits   0    
Deferred tax assets, Valuation allowance   $ 21,507,000 $ 17,001,000 $ 9,343,000
Effective Income Tax Rate Reconciliation, Percent 50.00% (0.94%) (0.12%)  
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued $ 0 $ 0    
Maximum [Member]        
Operating loss carryforwards, Expiration period   0 days    
Research Tax Credit Carryforward [Member]        
Operating loss carryforwards, Expiration period   2030 years    
Domestic Tax Authority [Member]        
Operating loss carryforwards   $ 15,000,000.0    
Tax credit carryforwards, Amount   $ 2,100,000    
Domestic Tax Authority [Member] | Minimum [Member]        
Operating loss carryforwards, Expiration period   2033 years    
Domestic Tax Authority [Member] | Maximum [Member]        
Operating loss carryforwards, Expiration period   2038 years    
State and Local Jurisdiction [Member]        
Operating loss carryforwards   $ 34,600,000    
Tax credit carryforwards, Amount   $ 1,300,000    
State and Local Jurisdiction [Member] | Minimum [Member]        
Operating loss carryforwards, Expiration period   2033 years    
State and Local Jurisdiction [Member] | Maximum [Member]        
Operating loss carryforwards, Expiration period   2044 years