XML 31 R20.htm IDEA: XBRL DOCUMENT v3.21.2
Income Taxes
 9 Months Ended
Sep. 30, 2021
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
Our provision for income taxes for interim periods is determined using an estimate of our annual effective tax rate, adjusted for discrete items, if any, that arise during the period. Each quarter, we update our estimate of the annual effective tax rate, and if the estimated annual effective tax rate changes, we make a cumulative adjustment in such period.
In the three months ended September 30, 2021 and 2020, we recorded income tax expense of $0.03 million and $0.3 million, respectively. In the nine months ended September 30, 2021 and 2020, we recorded income tax expenses of $0.04 million and $1.1 million, respectively.
We continue to maintain a full valuation allowance on our U.S. Federal and state net deferred tax assets. The tax expense for the three and nine months ended September 30, 2021 and 2020 was primarily due to foreign and state income tax expense.