Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation of Statutory Tax Rates and Effective Tax Rates (Detail)

v3.20.1
Income Taxes - Reconciliation of Statutory Tax Rates and Effective Tax Rates (Detail)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Percentage of pre-tax income:    
U.S. federal statutory income tax rate 21.00% 21.00%
State taxes, net of federal benefit 12.00% 5.00%
Credits 3.00% 3.00%
Non-deductible items (0.00%) (0.00%)
Provision to return 1.00% (1.00%)
Stock based compensation shortfall (1.00%) (1.00%)
Change in federal rate 0.00% 0.00%
Change in state rate 3.00% (3.00%)
Intercompany elimination adjustments 0.00% 0.00%
Deconsolidation of Caelum (3) 0
Change in fair value of warrants 0.00% 0.00%
Change in valuation allowance (36.00%) (25.00%)
Change in subsidiary basis (1.00%) 1.00%
Other 1.00% 0.00%
Effective income tax rate 0.00% 0.00%