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Income Taxes - Additional Information (Detail)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
USD ($)
Income Taxes [Line Items]  
Income tax operating loss carryforwards $ 228,500
Income tax operating loss carryforwards not expired 131,300
Income tax operating loss carryforwards, expire between 2032 and 2037 41,900
Liability for uncertain tax positions $ 0
Earliest Tax Year [Member] | R&D Credit Carryovers [Member]  
Income Taxes [Line Items]  
Tax credit carryovers expiration year 2028
Latest Tax Year [Member] | R&D Credit Carryovers [Member]  
Income Taxes [Line Items]  
Tax credit carryovers expiration year 2041
State and Local Jurisdiction [Member]  
Income Taxes [Line Items]  
Income tax operating loss carryforwards $ 55,200
State and Local Jurisdiction [Member] | R&D Credit Carryovers [Member]  
Income Taxes [Line Items]  
Tax credit carryovers $ 1,100
State and Local Jurisdiction [Member] | Earliest Tax Year [Member]  
Income Taxes [Line Items]  
Income tax operating loss carryforwards, expiration year 2027
State and Local Jurisdiction [Member] | Latest Tax Year [Member]  
Income Taxes [Line Items]  
Income tax operating loss carryforwards, expiration year 2041
Federal [Member]  
Income Taxes [Line Items]  
Income tax operating loss carryforwards $ 173,300
Federal [Member] | R&D Credit Carryovers [Member]  
Income Taxes [Line Items]  
Tax credit carryovers $ 2,300
Federal [Member] | Earliest Tax Year [Member]  
Income Taxes [Line Items]  
Income tax operating loss carryforwards, expiration year 2032
Federal [Member] | Latest Tax Year [Member]  
Income Taxes [Line Items]  
Income tax operating loss carryforwards, expiration year 2037