Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation of effective tax rate (Details)

v3.19.3.a.u2
Income Taxes - Reconciliation of effective tax rate (Details)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Income Taxes    
United States Federal Income Tax Rate 21.00% 21.00%
State Taxes, Net of Federal Benefit 13.82% (0.38%)
Permanent Differences (4.18%) (1.48%)
Change in Valuation Allowance (37.40%) 3.88%
Research and Development Credits 6.53% 1.06%
Tax Rate Differential (1.15%) (1.33%)
Topic 606 Adoption   (20.90%)
Stock-Based Compensation 0.45% 0.00%
Other (0.43%) (2.65%)
Effective Tax Rate (Expense) Benefit (1.36%) (0.80%)