Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

v3.20.2
Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Income Tax Contingency [Line Items]            
Valuation allowance $ 49,800     $ 49,800   $ 4,100
Effective corporate income tax rate 21.00%          
Deferred tax assets, valuation allowance $ 49,800     49,800   8,900
Cumulative adjusted pre-tax book loss (81,680)     (81,680)   (23,294)
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount   $ 37,100        
Provision (benefit) for income taxes       1,500    
Provision for (benefit from) income taxes $ (2,380)   $ 4,892 $ 30,779 $ (411)  
Income Tax Rate Continuing Operations 48.60%   392.00% 114.30% 11.00%  
Revision of Prior Period, Adjustment [Member]            
Income Tax Contingency [Line Items]            
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount   $ 37,100   $ 300    
Cumulative Effect, Period of Adoption, Adjustment [Member]            
Income Tax Contingency [Line Items]            
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount       300    
Cumulative Effect, Period of Adoption, Adjustment [Member] | Revision of Prior Period, Adjustment [Member]            
Income Tax Contingency [Line Items]            
Cumulative adjusted pre-tax book loss $ 36,800     36,800    
Domestic Tax Authority [Member]            
Income Tax Contingency [Line Items]            
Net operating loss carryforwards for federal income tax purpose           $ 136,100
Beginning year of expiry for net operating loss carry forwards           2021
Ending year of expiry for net operating loss carryforwards           2038
Provision (benefit) for income taxes       24,500    
State and Local Jurisdiction [Member]            
Income Tax Contingency [Line Items]            
Net operating loss carryforwards for federal income tax purpose           $ 793,700
Beginning year of expiry for net operating loss carry forwards           2020
Ending year of expiry for net operating loss carryforwards           2039
Provision (benefit) for income taxes       $ 12,300