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Equity-Based Compensation (Schedule Of Remaining Unrecognized Compensation Expense For Unvested Awards) (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended |
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Apr. 04, 2015
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| Equity-Based Compensation [Abstract] | |
| 2015 | $ 5,664usna_EmployeeServiceShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedNextTwelveMonths |
| 2016 | 6,771usna_EmployeeServiceShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedYearTwo |
| 2017 | 4,484usna_EmployeeServiceShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedYearThree |
| 2018 | 1,561usna_EmployeeServiceShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedYearFour |
| 2019+ | 510usna_EmployeeServiceShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedYearFive |
| Total | $ 18,990us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized |
| Unrecognized compensation expense weighted average period of recognition | 1 year 10 months 24 days |
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- Details
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- Definition
Unrecognized cost of unvested share-based compensation awards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not Yet Recognized, Next Twelve Months No definition available.
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- Definition
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not Yet Recognized, Year Five No definition available.
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- Definition
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not Yet Recognized, Year Four No definition available.
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- Definition
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not Yet Recognized, Year Three No definition available.
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- Definition
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not Yet Recognized, Year Two No definition available.
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