No definition available.

Name:	sfs_CashTerminationFee
Namespace Prefix:	sfs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The amount of cash termination fee paid by parent to company.

No definition available.

Name:	sfs_CashTerminationFeeByParent
Namespace Prefix:	sfs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Cash termination fee paid by parent, percentage of equity.

No definition available.

Name:	sfs_CashTerminationFeeParentPercentageOfEquity
Namespace Prefix:	sfs_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Cash termination fee, percentage of equity value.

No definition available.

Name:	sfs_CashTerminationFeePercentageOfEquity
Namespace Prefix:	sfs_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

The duration of cure right, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

No definition available.

Name:	sfs_ClosingOfTenderOfferCureRightDuration
Namespace Prefix:	sfs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Maximum extension period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

No definition available.

Name:	sfs_MaximumExtensionPeriodOfTenderOffer
Namespace Prefix:	sfs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The duration of offer expiration period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

No definition available.

Name:	sfs_OfferExpirationPeriod
Namespace Prefix:	sfs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Number of business days with in commencement of offer, fails to reject, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

No definition available.

Name:	sfs_RestrictionToRejectOfferBusinessDays
Namespace Prefix:	sfs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Restriction to consummates a third party acquisition proposal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

No definition available.

Name:	sfs_TerminationPeriodRestrictionToConsummatesThirdPartyAcquisitionProposal
Namespace Prefix:	sfs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

No definition available.

Name:	us-gaap_SaleOfStockPricePerShare
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

No definition available.

Smart & Final Stores, Inc. 10-Q