Annual report pursuant to Section 13 and 15(d)

Provision for Income Taxes - Reconciliation of Statutory U.S. Federal Income Tax Rate to Company's Effective Tax Rate (Detail)

v3.20.1
Provision for Income Taxes - Reconciliation of Statutory U.S. Federal Income Tax Rate to Company's Effective Tax Rate (Detail)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Effective Income Tax Rate Continuing Operations Tax Rate Reconciliation [Abstract]      
Tax, computed at the federal statutory rate 21.00% 21.00% 35.00%
State taxes, net of federal tax benefit 1.17% 6.23%  
Meals, entertainment and other (0.55%) (0.02%)  
Benefit from basis difference in acquired asset 2.34%    
Change in valuation allowance (21.68%) (27.25%)  
Benefit from (provision for) income taxes 2.28% (0.04%)