Income Taxes	9 Months Ended
Sep. 30, 2021
Income Taxes
Income Taxes	8. Income Taxes The Company calculates its tax provision in interim periods using its best estimate of the effective tax rate expected for the full year. The tax rate for the three and nine months ended September 30, 2021 and 2020 differs from the statutory rate of 21% due primarily to the tax impact of the permanent component of employee stock option exercises.

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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+ Details