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Commitments and Contingencies - Guarantees and Warranties (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Apr. 28, 2018 | Oct. 28, 2017 | Apr. 27, 2019 | Apr. 28, 2018 | Apr. 29, 2017
Movement in Standard Product Warranty Accrual |  |  |  |  |
Beginning accrued warranty obligations |  |  | $ 29,953 | $ 27,899 | $ 30,496
Warranties issued during the period |  |  | 9,239 | 11,961 | 10,930
Settlements made during the period |  |  | (16,715) | (17,653) | (16,790)
Changes in accrued warranty obligations for pre-existing warranties during the period, including expirations | $ 2,354 | $ 3,179 | 1,993 | 7,746 | 3,263
Ending accrued warranty obligations | $ 29,953 |  | 24,470 | 29,953 | 27,899
Performance guarantees | Letter of credit and bank guarantees agreements |  |  |  |  |
Guarantees: |  |  |  |  |
Performance guarantees outstanding |  |  | 13,293 |  |
Performance guarantees | Surety bonds |  |  |  |  |
Guarantees: |  |  |  |  |
Performance guarantees outstanding |  |  | 9,900 |  |
Out-of-Home Product Application [Member] |  |  |  |  |
Movement in Standard Product Warranty Accrual |  |  |  |  |
Changes in accrued warranty obligations for pre-existing warranties during the period, including expirations |  |  | 2,427 | $ 4,539 | $ 1,766
Ending accrued warranty obligations |  |  | $ 984 |  |

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- Definition Amount of loss contingency liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349 + Details
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- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (c)(5) -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249 + Details
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- Definition Amount of decrease in the standard and extended product warranty accrual from payments made in cash or in kind to satisfy claims under the terms of the standard and extended product warranty. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph ((c)(2)) -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249 + Details
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