XML 31 R17.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Profit Sharing and 401(k) Plan | 12 Months Ended
--- | ---
Dec. 29, 2018
Profit Sharing And401 K Plan [Abstract] |
Profit Sharing and 401(k) Plan | (10) Profit Sharing and 401(k) Plan Under our profit sharing and 401(k) plan, eligible employees may defer up to 50% of their compensation on a pre-tax basis, subject to Internal Revenue Service limitations. Each year, we may make a discretionary contribution equal to a percentage of the employee’s contribution. During 2018, 2017 and 2016, our contributions, net of forfeitures, were $5 million, $5 million and $5 million, respectively.

X
- Definition Profit sharing and 401 (k) plan. + References No definition available. + Details
Name: | snbr_ProfitSharingAnd401KPlanAbstract
Namespace Prefix: | snbr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
Name: | us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration