Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

v3.21.1
Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2020
Mar. 31, 2021
Income Tax Contingency [Line Items]      
Valuation allowance   $ 48,100 $ 0
Cumulative adjusted pre-tax book loss   (78,023) $ (77,700)
Deferred tax assets operating loss carry forwards domestic   28,400  
Deferred tax assets, operating loss carryforwards, state and local   15,700  
Deferred tax assets other financial statement accrual assets   4,000  
Revision of Prior Period, Adjustment [Member]      
Income Tax Contingency [Line Items]      
Deferred tax assets, valuation allowance provided $ 35,100    
Cumulative Effect, Period of Adoption, Adjustment [Member] | Revision of Prior Period, Adjustment [Member]      
Income Tax Contingency [Line Items]      
Cumulative adjusted pre-tax book loss   35,100  
Domestic Tax Authority [Member]      
Income Tax Contingency [Line Items]      
Valuation allowance   28,400  
Net operating loss carryforwards for federal income tax purpose   $ 135,300  
Beginning year of expiry for net operating loss carry forwards   2021  
Ending year of expiry for net operating loss carryforwards   2038  
State and Local Jurisdiction [Member]      
Income Tax Contingency [Line Items]      
Valuation allowance   $ 19,700  
Net operating loss carryforwards for federal income tax purpose   $ 610,800  
Beginning year of expiry for net operating loss carry forwards   2021  
Ending year of expiry for net operating loss carryforwards   2040