XML 55 R43.htm IDEA: XBRL DOCUMENT v3.19.1

Repurchase of Common Stock - Additional Information (Details) $ in Millions	Mar. 30, 2019 USD ($)
Repurchase Of Common Stock [Abstract]
Remaining authorized stock purchase plan	$ 145

X

- Definition

Repurchase of Common Stock [Abstract]

+ References

No definition available.

+ Details

Name:	snbr_RepurchaseOfCommonStockAbstract
Namespace Prefix:	snbr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount remaining of a stock repurchase plan authorized.

+ References

No definition available.

+ Details

Name:	us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant