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Income Taxes
 12 Months Ended
Mar. 26, 2022
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
Income (loss) before income taxes consisted of (in thousands):
 Fiscal Years Ended
March 26,
2022		March 27,
2021		March 28,
2020
U.S.$(17,674)$19,189 $44,154 
Non-U.S.386,337 226,057 137,112 
$368,663 $245,246 $181,266 

The provision (benefit) for income taxes consists of (in thousands):
 Fiscal Years Ended
March 26,
2022		March 27,
2021		March 28,
2020
Current:
U.S.$4,483 $981 $5,241 
Non-U.S.52,920 32,428 21,634 
Total current tax provision$57,403 $33,409 $26,875 
Deferred:
U.S.(6,256)(192)(561)
Non-U.S.(8,839)(5,315)(4,546)
Total deferred tax provision(15,095)(5,507)(5,107)
Total tax provision$42,308 $27,902 $21,768 
The effective income tax rates differ from the rates computed by applying the statutory federal rate to pretax income as follows (in percentages):
 Fiscal Years Ended
March 26,
2022		March 27,
2021		March 28,
2020
U.S. federal statutory rate21.0 21.0 21.0 
Foreign income taxed at different rates(9.6)(8.4)(5.5)
Stock-based compensation(0.9)(0.8)(2.7)
Foreign-derived intangible income deduction(0.1)(0.3)(0.8)
Current U.S. tax on foreign earnings0.6 0.4 1.1 
Change in valuation allowance(0.2)— (0.1)
Release of prior year unrecognized tax benefits— (1.4)(2.3)
Interest related to unrecognized tax benefits0.2 0.3 0.5 
Other0.5 0.6 0.8 
Effective tax rate11.5 11.4 12.0 
The legislation commonly referred to as the Tax Cuts and Jobs Act ("Tax Act") was enacted on December 22, 2017 and required companies to pay a one-time transition tax on earnings of certain foreign subsidiaries that were previously tax-deferred. We elected to pay the transition tax over the eight-year period provided in the Tax Act. As of March 26, 2022, the remaining balance of our transition tax obligation was $27.0 million, which will be paid over the next four years.
Significant components of our deferred tax assets and liabilities as of March 26, 2022 and March 27, 2021 are (in thousands): 
March 26,
2022		March 27,
2021
Deferred tax assets:
Accrued expenses and allowances$6,517 $4,354 
Net operating loss carryforwards1,713 1,781 
Research and development tax credit carryforwards15,230 12,753 
Stock-based compensation18,952 10,995 
Lease liabilities26,653 17,672 
Capitalized research and development6,372 — 
Other651 — 
Total deferred tax assets$76,088 $47,555 
Valuation allowance for deferred tax assets(13,088)(12,782)
Net deferred tax assets$63,000 $34,773 
Deferred tax liabilities:
Depreciation and amortization$3,574 $4,059 
Right of use asset25,744 16,987 
Acquisition intangibles32,315 3,100 
Other— 650 
Total deferred tax liabilities$61,633 $24,796 
Total net deferred tax assets$1,367 $9,977 
Deferred tax assets and liabilities are recorded for the estimated tax impact of temporary differences between the tax basis and book basis of assets and liabilities. A valuation allowance is established against a deferred tax asset when it is more likely than not that the deferred tax asset will not be realized. Our valuation allowance increased by $0.3 million in fiscal year 2022.  The Company maintains a valuation allowance for certain deferred tax assets primarily relating to certain state net operating loss and state tax credit carryforwards due to the likelihood that they will expire or go unutilized. Management believes that the Company’s results from future operations will generate sufficient taxable income in the appropriate jurisdictions and of the appropriate character such that it is more likely than not that the remaining deferred tax assets will be realized.
At March 26, 2022, the Company had gross federal net operating loss carryforwards of $3.7 million, all of which related to acquired companies and are, therefore, subject to certain limitations under Section 382 of the Internal Revenue Code. The
federal net operating loss carryforwards expire in fiscal years 2023 through 2031. At March 26, 2022 the Company had gross foreign net operating loss carryforwards of $0.3 million that do not expire and gross state net operating loss carryforwards of $10.1 million that expire in fiscal years 2023 through 2030. In addition, the Company had $13.7 million of state business tax, minimum tax, and research and development tax credit carryforwards. Certain of these state tax credits will expire in fiscal years 2023 through 2034, and others do not expire.
At March 26, 2022, unremitted earnings of our foreign subsidiaries that can be distributed without tax consequence, other than withholding taxes that may apply based on the jurisdiction of the subsidiary, are not expected to be indefinitely reinvested. No taxes have been accrued for foreign withholding taxes on these earnings as these amounts are not material. We have not provided additional income taxes for other outside basis differences inherent in our foreign entities, as these amounts continue to be indefinitely reinvested in foreign operations. Determining the amount of unrecognized deferred tax liability related to all other outside basis differences in these entities is not practicable at this time.
On July 27, 2015, the U.S. Tax Court issued an opinion in Altera Corp. et al. v. Commissioner which concluded that the regulations relating to the treatment of stock-based compensation expense in intercompany cost-sharing arrangements were invalid. In 2016 the U.S. Internal Revenue Service appealed the decision to the U.S. Court of Appeals for the Ninth Circuit (the “Ninth Circuit”). On July 24, 2018, the Ninth Circuit issued a decision that was subsequently withdrawn and a reconstituted panel conferred on the appeal. On June 7, 2019, the Ninth Circuit reversed the decision of the U.S. Tax Court and upheld the cost-sharing regulations. On February 10, 2020, Altera Corp. filed a Petition for a Writ of Certiorari with the Supreme Court of the United States, which was denied by the Supreme Court on June 22, 2020. Although the issue is now resolved within the Ninth Circuit, the Ninth Circuit's opinion is not binding in other circuits. The potential impact of this issue on the Company, which is not located within the jurisdiction of the Ninth Circuit, is unclear at this time. We will continue to monitor developments related to this issue and the potential impact of those developments on the Company's current and prior fiscal years.
The following table summarizes the changes in the unrecognized tax benefits (in thousands): 
March 26,
2022		March 27,
2021
Beginning balance$32,879 $36,208 
Additions based on tax positions related to the current year— — 
Reductions based on tax positions related to the prior years— (3,329)
Ending balance$32,879 $32,879 
At March 26, 2022, the Company had gross unrecognized tax benefits of $32.9 million, all of which would impact the effective tax rate if recognized. The Company’s unrecognized tax benefits are classified as “Non-current income taxes” in the Consolidated Balance Sheet. The Company recognizes interest and penalties related to unrecognized tax benefits in the provision for income taxes. During fiscal years 2022 and 2021 we recognized interest expense, net of tax, of approximately $0.9 million and $0.7 million, respectively. The total amount of interest accrued as of March 26, 2022 was $5.1 million.
The Company and its subsidiaries are subject to U.S. federal income tax as well as income tax in multiple state and foreign jurisdictions. Fiscal years 2017 through 2022 remain open to examination by the major taxing jurisdictions to which the Company is subject, although carry forward attributes that were generated in tax years prior to fiscal year 2017 may be adjusted upon examination by the tax authorities if they have been, or will be, used in a future period. 
The Company's fiscal year 2017, 2018, and 2019 federal income tax returns are under examination by the U.S. Internal Revenue Service ("IRS").  The IRS has proposed adjustments that would increase U.S. taxable income related to transfer pricing matters with respect to our U.S. and U.K. affiliated companies and on May 17, 2022, the IRS issued a Revenue Agent’s Report asserting additional tax of approximately $170.5 million plus interest and imposing penalties of approximately $63.7 million. We do not agree with the IRS's positions and we intend to vigorously dispute the proposed adjustments. We intend to pursue resolution through the administrative process with the IRS Independent Office of Appeals and, if necessary, through judicial remedies. We expect it could take a number of years to reach resolution on these matters. Although the final resolution of these matters is uncertain, the Company believes adequate amounts have been reserved for any adjustments to the provision for income taxes that may ultimately result. However, if the IRS prevails in these matters, the assessed tax, interest, and penalties, if any, could have an adverse impact on our financial position, results of operations, and cash flows in future periods. The Company is not under an income tax audit in any other major taxing jurisdiction.