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Income Tax Matters | 3 Months Ended
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Mar. 31, 2023
Income Tax Disclosure [Abstract] |
Income Tax Matters | 10. Income Tax Matters The following table presents the income tax provision by region (in millions of dollars):
|  | Quarter Ended March 31, |
|  | 2023 |  |  | 2022 |
Domestic |  | $ | (4.4 | ) |  | $ | (2.9 | )
Foreign |  |  | (0.5 | ) |  |  | (0.4 | )
Total |  | $ | (4.9 | ) |  | $ | (3.3 | )
The income tax provision for the quarters ended March 31, 2023 and March 31, 2022 was $4.9 million and $3.3 million, respectively, reflecting an effective tax rate of 24% and 29%, respectively. There was no material difference between the effective tax rate and the blended statutory tax rate for the quarter ended March 31, 2023. The difference between the effective tax rate and the projected blended statutory tax rate for the quarter ended March 31, 2022 was primarily due to: (i) an increase of 4% of pre‑tax income for the recognition of excess book benefits from stock based compensation; (ii) an increase of 1% of pre-tax income related to state tax adjustments for certain state net operating losses; and (iii) an increase of 1% of pre-tax income related to non‑deductible compensation expense, partially offset by a decrease of 2% of pre‑tax income related to a Federal Research and Development credit. Our gross unrecognized benefits relating to uncertain tax positions were $5.5 million and $5.0 million at March 31, 2023 and December 31, 2022, respectively, of which, $5.5 million and $5.0 million would be recorded through our income tax provision and thus, impact the effective tax rate at March 31, 2023 and December 31, 2022, respectively, if the gross unrecognized tax benefits were to be recognized. We do not expect our gross unrecognized tax benefits to significantly change within the next 12 months.

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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 https://asc.fasb.org/extlink&oid=121826272&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 https://asc.fasb.org/extlink&oid=122134291&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 https://asc.fasb.org/extlink&oid=121826272&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 https://asc.fasb.org/extlink&oid=122134291&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 https://asc.fasb.org/extlink&oid=121826272&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 https://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 https://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 https://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(2)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
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