Income Taxes

3 Months Ended

Mar. 31, 2021

Income Tax Disclosure [Abstract]

Income Taxes

12. Income taxes

For the three months ended March 31, 2022 and 2021, we recorded income tax expense of $0.08 million and an income tax benefit of $0.02 million, respectively, both of which were lower than the statutory rate of 21%, primarily due to a valuation allowance established against the U.S. deferred tax assets.

At March 31, 2022, we had total unrecognized tax benefits of approximately $0.7 million. Approximately $0.2 million of our gross unrecognized tax benefits, if recognized, would affect our effective tax rate. We recognize accrued interest and penalties related to unrecognized tax benefits as a component of income tax expense. As of March 31, 2022, we had no accrued interest or penalties related to unrecognized tax benefits.