XML 85 R67.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Segment Information (Schedule Of Long-Lived Assets By Geographic Region) (Details) - USD ($) $ in Thousands | Dec. 29, 2018 | Dec. 30, 2017
--- | --- | ---
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Long-lived assets | $ 158,780 | $ 176,251
Assets | 554,463 | 519,269
Greater China [Member] |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Long-lived assets | 92,062 | 98,641
Assets | 301,498 | 289,463
Southeast Asia Pacific [Member] |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Long-lived assets | 13,042 | 14,603
Assets | 45,495 | 49,444
North Asia [Member] |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Long-lived assets | 3,311 | 1,908
Assets | 14,186 | 13,234
Asia Pacific [Member] |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Long-lived assets | 108,415 | 115,152
Assets | 361,179 | 352,141
Americas And Europe [Member] |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Long-lived assets | 50,365 | 61,099
Assets | $ 193,284 | $ 167,128

X
- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + 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(11)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(12)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
Name: | us-gaap_Assets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e9038-108599 + Details
Name: | us-gaap_NoncurrentAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_StatementGeographicalAxis=usna_GreaterChinaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=usna_SoutheastAsiaAndPacificMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=usna_NorthAsiaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=srt_AsiaPacificMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=usna_AmericasAndEuropeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |