10. INCOME TAX BENEFIT

3 Months Ended

Mar. 31, 2021

Income Tax Disclosure [Abstract]

INCOME TAX BENEFIT

10.        INCOME TAX BENEFIT

The effective tax rate (income tax benefit as a percentage of income (loss) before income tax benefit) was (0.1%) for the three months ended March 31, 2021, as compared to (6.0%) for the three months ended March 31, 2020. The effective tax rates vary, primarily as a result of the full valuation on our deferred tax asset in the current year and the tax benefit related to our stock-based compensation and a pretax loss in the prior year period.