Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

v3.20.1
Income Taxes - Additional Information (Detail) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Dec. 31, 2017
Income Tax Contingency [Line Items]      
Valuation allowance $ 50.1 $ 4.1  
Effective corporate income tax rate 21.00%   35.00%
Deferred tax assets, valuation allowance $ 50.1 8.9  
Cumulative adjusted pre-tax book loss 37.1    
Increase to the valuation allowance amount $ 37.1    
Domestic Tax Authority [Member]      
Income Tax Contingency [Line Items]      
Net operating loss carryforwards for federal income tax purpose   $ 136.1  
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]      
Net operating loss carryforwards for federal income tax purpose   $ 793.7  
Beginning year of expiry for net operating loss carry forwards   2020  
Ending year of expiry for net operating loss carryforwards   2039