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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS - (Details) - USD ($) $ in Thousands | 12 Months Ended
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Apr. 29, 2017 | Apr. 30, 2016 | May 02, 2015
Allowance for Doubtful Accounts |  |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |  |
Balance at Beginning of Year |  | $ 2,797 | $ 2,316 | $ 2,539
Charged to Costs and Expenses |  | 2,496 | 934 | (150)
Charged to Other Accounts |  | 0 | 0 | 0
Deductions | [1] | (2,683) | (453) | (73)
Balance at End of Year |  | 2,610 | 2,797 | 2,316
Allowance for Excess and Obsolete Inventories |  |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |  |
Balance at Beginning of Year |  | 4,975 | 3,998 | 2,692
Charged to Costs and Expenses |  | 2,437 | 3,475 | 2,701
Charged to Other Accounts | [2] | (68) | 12 | 2
Deductions | [3] | (2,377) | (2,510) | (1,397)
Balance at End of Year |  | $ 4,967 | $ 4,975 | $ 3,998
[1] | (b) Write-off of uncollected accounts, net of collections
[2] | (a) Translation adjustment on foreign subsidiary balances
[3] | (c) Obsolete and excess inventory disposals

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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- Definition Amount of increase in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from charges to costs and expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- Definition Amount of increase in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from charges to accounts other than costs and expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- Definition Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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