Name:	syx_DurationOfSentenceGivenToCarlFiorentinoBasedOnWhistleblowerReport
Namespace Prefix:	syx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Refers to the term of sentence given to Gilbert Fiorentino for mail fraud, wire fraud and money laundering charges, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	syx_DurationOfSentenceGivenToGilbertFiorentinoBasedOnWhistleblowerReport
Namespace Prefix:	syx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Refers to the term of supervised release given to Carl Fiorentino for mail fraud, wire fraud and money laundering charges, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	syx_DurationOfSupervisedReleaseGivenToCarlFiorentinoBasedOnWhistleblowerReport
Namespace Prefix:	syx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Refers to the term of supervised release to Gilbert Fiorentino for mail fraud, wire fraud and money laundering charges, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	syx_DurationOfSupervisedReleaseGivenToGilbertFiorentinoBasedOnWhistleblowerReport
Namespace Prefix:	syx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The number of states being audited and seeking recovery of unclaimed property.

No definition available.

Name:	syx_NumberOfStatesSeekingRecoveryOfUnclaimedProperty
Namespace Prefix:	syx_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Income received for the settlement of litigation during the current period.

No definition available.

Name:	syx_ProceedsFromLegalSettlement
Namespace Prefix:	syx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- References

No definition available.

Name:	us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

No definition available.