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Income Taxes - Summary of Change in Valuation Allowances Against Deferred Income Taxes (Detail) - USD ($)
$ in Thousands
12 Months Ended
May 02, 2021
May 03, 2020
Apr. 28, 2019
Income Tax Disclosure [Abstract]      
beginning balance $ 3,148 $ 748 $ 5,204
change in judgement of beginning of year U.S. valuation allowance [1] 6,964    
change in valuation allowance associated with current year earnings 1,004    
establishment of valuation allowance [2]   2,281  
Write-off of deferred income taxes [3]     (4,544)
change in estimate during current year [4] 558 119 88
ending balance $ 11,674 $ 3,148 $ 748
[1] Refer to the above Summary within the section titled Deferred Income Taxes – Valuation Allowance for further details regarding our assessment and conclusions reached for providing a full valuation allowance against our U.S net deferred income tax assets during the first quarter of fiscal 2021.
[2] In connection with the sale of a discontinued operation that was treated as a partnership for income tax purposes, we generated a capital loss carryforward totaling $10.9 million with a related future income tax benefit of $2.3 million. Since capital losses can only be offset by capital gains, we established a full valuation allowance on this capital loss carryforward as we do not have capital assets that would generate capital gains that would utilize this carryforward.
[3] During fiscal 2019, we recorded an income tax charge of $4.5 million for the write-off of certain U.S. foreign income tax credits, and in turn, we recorded an income tax benefit of $4.5 million for the reduction in our valuation allowance.
[4] Amount represents changes in our U.S. net deferred income tax asset balances during the current year that pertain to (i) income tax provision to return adjustments, (ii) changes in estimates of our U.S. effective income tax rate that pertain to U.S. state income tax rates and apportionment percentages, and (iii) other immaterial items.