Name:	syx_AdditionalCharges
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The charge against earnings that represents the legal, professional and other costs from or disposal of business activities or restructurings pursuant to a plan.

No definition available.

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The charges that require use of cash against earnings that represents the legal, professional and other costs from or disposal of business activities or restructurings pursuant to a plan.

No definition available.

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Charges related to transitional services agreement

No definition available.

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Amount after tax relates to discontinued European entities cumulative translation adjustment during the period.

No definition available.

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The charge against earnings that represents the write-off of the carrying value of fixed assets associated with exit from or disposal of business activities or restructurings pursuant to a plan.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Amount of expenses provided in the period for severance and other personnel costs, attributable to disposal group, including, but not limited to, discontinued operation.

No definition available.

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The amount special charges charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

No definition available.

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Namespace Prefix:	syx_
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Period Type:	duration

Amount of special charges related to future lease cash flows during the period.

No definition available.

Name:	syx_SpecialChargesRelatedToFutureLeaseCashFlows
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Data Type:	xbrli:monetaryItemType
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Amount of special charges related to ongoing restitution proceedings during the period.

No definition available.

Name:	syx_SpecialChargesRelatedToOngoingRestitutionProceedings
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 5.P.3)
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Data Type:	xbrli:stringItemType
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Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
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Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
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Data Type:	na
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Name:	us-gaap_StatementOperatingActivitiesSegmentAxis=syx_ContinuingandDiscontinuedOperationsMember
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Data Type:	na
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Name:	us-gaap_StatementOperatingActivitiesSegmentAxis=us-gaap_SegmentContinuingOperationsMember
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