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Note K - Equity-based Compensation - Remaining Unrecognized Compensation Expense (Details) $ in Thousands | Jan. 02, 2021 USD ($)
--- | ---
2021 | $ 11,700
2022 | 7,955
2023 | 3,561
2024 | 504
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total | $ 23,720

X
- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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X
- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement to be recognized in year four. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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X
- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement to be recognized in year one + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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X
- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement to be recognized in year three. + References No definition available. + Details
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X
- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement to be recognized in year two. + References No definition available. + Details
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Namespace Prefix: | usna_
Data Type: | xbrli:monetaryItemType
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Period Type: | instant