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v3.19.3.a.u2

Valuation and Qualifying Accounts and Reserves (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 28, 2019 | Dec. 29, 2018 | Dec. 30, 2017
Allowance for doubtful accounts |  |  |  |
Valuation And Qualifying Accounts Disclosure [Line Items] |  |  |  |
Balance at Beginning of Period |  | $ 1,743 | $ 2,001 | $ 2,973
Additions charged to Costs and Expenses |  | (123) | 130 | (587)
Additions charged to Other Accounts |  | 0 | 0 | 0
Deductions | [1] | 193 | (388) | (385)
Balance at End of Period |  | 1,813 | 1,743 | 2,001
Inventory and other reserves |  |  |  |
Valuation And Qualifying Accounts Disclosure [Line Items] |  |  |  |
Balance at Beginning of Period |  | 3,843 | 3,984 | 3,703
Additions charged to Costs and Expenses |  | 8,710 | 7,906 | 7,823
Additions charged to Other Accounts |  | 0 | 0 | 0
Deductions | [1] | (7,868) | (8,047) | (7,542)
Balance at End of Period |  | 4,685 | 3,843 | 3,984
Tax valuation allowance |  |  |  |
Valuation And Qualifying Accounts Disclosure [Line Items] |  |  |  |
Balance at Beginning of Period |  | 6,191 | 22,760 | 18,277
Additions charged to Costs and Expenses |  | 709 | 1,893 | 11,515
Additions charged to Other Accounts |  | (40) | (403) | 1,079
Deductions | [1] | (100) | (18,059) | (8,111)
Balance at End of Period |  | $ 6,760 | $ 6,191 | $ 22,760
[1] | Primarily represents the utilization of established reserves, net of recoveries, where applicable.

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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -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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