Income Taxes	6 Months Ended
Jun. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	14. Income TaxesOur effective tax rate for the three and six months ended June 30, 2021 was 23.0% and 21.9%, respectively, compared to 21.8% and 8.5% for the three and six months ended June 30, 2020, respectively. The increase in the effective tax rate in the three and six month periods of 2021 compared to the same periods in 2020 is primarily attributable to the impact of the income tax benefit recognized related to excess tax benefits from stock option exercises totaling $11,213 and $28,590 for the three and six months ended June 30, 2021, respectively, and $6,854 and $62,509 for the three and six months ended June 30, 2020,

- 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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