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Income Taxes | 9 Months Ended
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Sep. 30, 2020
Income Tax Disclosure [Abstract] |
Income Taxes | Income Taxes We file a consolidated federal income tax return for all of our wholly owned subsidiaries. For the three months ended September 30, 2020 and 2019, income tax expense was $72 and $70, respectively, and $226 and $227 for the nine months ended September 30, 2020 and 2019, respectively. Our effective tax rate for the three months ended September 30, 2020 and 2019 was 20.9% and 22.2%, respectively. Our effective tax rate for the nine months ended September 30, 2020 and 2019 was 21.9% and 25.3%, respectively. The effective tax rates for the three and nine months ended September 30, 2020 were primarily impacted by federal and state tax credits and the recognition of excess tax benefits related to share-based compensation. The effective tax rate for the three months ended September 30, 2019 was primarily impacted by the recognition of excess tax benefits related to share-based compensation. The effective tax rate for the nine months ended September 30, 2019 was primarily impacted by the increase to the valuation allowance related to certain federal research and development credits that are no longer expected to be realizable. We estimate our effective tax rate for the year ending December 31, 2020 will be approximately 23%. As of September 30, 2020 and December 31, 2019, we had a valuation allowance related to deferred tax assets of $69 and $70, respectively, that was not likely to be realized due to certain net operating loss limitations, including tax credits, and acquired net operating losses that were not more likely than not going to be utilized.

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- 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32857-109319 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 11.C) -URI http://asc.fasb.org/extlink&oid=116825942&loc=d3e330215-122817 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 17 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32809-109319 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I.5.Q1) -URI http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32705-109319 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 270 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6424409&loc=d3e44925-109338 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -URI http://asc.fasb.org/topic&trid=2144680 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331 + Details
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