Income taxes	9 Months Ended
Sep. 30, 2021
Income taxes
Income taxes	14. Income taxes The Company did not record a federal or state income tax provision or benefit for the three and nine months ended September 30, 2021 and 2020, respectively, due to the expected loss before income taxes to be incurred for the years ended December 31, 2021 and 2020, as well as the Company’s continued maintenance of a full valuation allowance against its net deferred tax assets.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

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