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Valuation and Qualifying Accounts and Reserves (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Jan. 02, 2021 | Dec. 28, 2019 | Dec. 29, 2018
Allowance for doubtful accounts |  |  |  |
Valuation And Qualifying Accounts Disclosure [Line Items] |  |  |  |
Balance at Beginning of Period |  | $ 1,813 | $ 1,743 | $ 2,001
Additions charged to Costs and Expenses |  | 411 | (123) | 130
Additions charged to Other Accounts |  | 0 | 0 | 0
Deductions | [1] | 74 | 193 | (388)
Balance at End of Period |  | 2,298 | 1,813 | 1,743
Inventory and other reserves |  |  |  |
Valuation And Qualifying Accounts Disclosure [Line Items] |  |  |  |
Balance at Beginning of Period |  | 4,685 | 3,843 | 3,984
Additions charged to Costs and Expenses |  | 16,425 | 8,710 | 7,906
Additions charged to Other Accounts |  | 0 | 0 | 0
Deductions | [1] | (10,871) | (7,868) | (8,047)
Balance at End of Period |  | 10,239 | 4,685 | 3,843
Tax valuation allowance |  |  |  |
Valuation And Qualifying Accounts Disclosure [Line Items] |  |  |  |
Balance at Beginning of Period |  | 6,760 | 6,191 | 22,760
Additions charged to Costs and Expenses |  | 792 | 709 | 1,893
Additions charged to Other Accounts |  | 141 | (40) | (403)
Deductions | [1] | (503) | (100) | (18,059)
Balance at End of Period |  | $ 7,190 | $ 6,760 | $ 6,191
[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(Column B)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 Reference 2: 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(Column E)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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- Definition Amount of decrease in 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(Column D)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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