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Income Taxes | 6 Months Ended
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Sep. 30, 2023
Income Tax Disclosure [Abstract] |
Income Taxes | Income Taxes The Company’s effective income tax rates were 24.4% and 23.1% for the three months ended September 30, 2023 and 2022, respectively, and 22.2% and 23.1% for the six months ended September 30, 2023 and 2022, respectively. Our effective tax rates for these periods differ from the federal statutory rate of 21.0% primarily due to the inclusion of state and foreign income taxes and permanent rate differences, which are predominantly related to certain executive compensation and the accrual of reserves for uncertain tax positions, offset by research and development tax credits, excess tax benefits for employee share-based compensation, and the Foreign Derived Intangible Income deduction. The Company is currently contesting tax assessments from the District of Columbia Office of Tax and Revenue (“DC OTR”) for fiscal years 2013 through 2015. The assessment relates to $11.7 million of taxes, net of federal tax benefits, as of September 30, 2023. During fiscal 2022, the Company received notification that the District of Columbia Office of Administrative Hearings ruled in favor of the DC OTR. The Company is currently appealing the decision with the District of Columbia Court of Appeals. The Company intends to continue to vigorously defend this matter. Oral arguments occurred on September 26, 2023 and the Company continues to wait on further developments from the court. The Company has taken similar tax positions with respect to subsequent fiscal years. As of September 30, 2023, the Company does not maintain reserves for any uncertain tax positions related to the contested tax benefits related to 2013 through 2015, nor does it maintain reserves for the similar tax positions taken in the subsequent fiscal years. Management continues to evaluate this position quarterly to determine if a change in estimate is needed. If an adverse final resolution were to occur with respect to the contested tax benefits or the similar tax positions taken for fiscal years 2013 through 2020, the total potential future tax expense that would arise would be approximately $40.4 million to $64.3 million, net of federal benefit. During fiscal 2024, the Company expects to recognize an increase in reserves for uncertain tax positions related to an increase in research and development tax credits available, as in prior years, and the required capitalization of research and development expenditures which began in fiscal 2023. The unrecognized tax benefits related to the capitalization of research and development expenditures is expected to be offset by a deferred tax asset. Tax Receivables and Payables The Company has both income tax receivables and income tax payable on its condensed consolidated balance sheets as follows:
|  | September 30, 2023 |  | March 31, 2023
Current income tax receivable |  | 24,031 |  |  | 23,633 |
Long term income tax receivable |  | 167,821 |  |  | 167,821 |
Current income tax payable |  | 6,668 |  |  | 14,523 |
Current income tax payable represents current liabilities associated with the Company’s current tax returns that the Company intends to file in fiscal 2024 and fiscal 2025. This amount is classified as other current liabilities on the condensed consolidated balance sheets. The long-term income tax receivable primarily represents the amended U.S. federal return refund claims for research and development tax credits and the carryback claim for the fiscal 2021 net operating loss which is classified as other long-term assets on the condensed consolidated balance sheet. The Company is currently under federal audit by the IRS for fiscal years 2016, 2017 and 2019-2021 and the receipt of our U.S federal return refund claims is contingent upon the completion of the ongoing IRS audits.

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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 -Topic 946 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480990/946-20-50-13 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//740/tableOfContent Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-14 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-21 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 270 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482526/740-270-50-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 17 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-17 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I.5.Q1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479360/740-10-S99-1 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 11.C) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479360/740-10-S99-2 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482603/740-30-50-2 + Details
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