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v2.4.1.9

ACQUISITION (Details) In Millions, unless otherwise specified |  |  |  |  |  | 0 Months Ended | 12 Months Ended |  | 12 Months Ended | 0 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2012 USD ($) | Dec. 31, 2014 Client Lists [Member] USD ($) | Dec. 31, 2013 Client Lists [Member] USD ($) | Jun. 12, 2014 Misco Solutions B.V. [Member] USD ($) | Jun. 12, 2014 Misco Solutions B.V. [Member] EUR (€) | Dec. 31, 2014 Misco Solutions B.V. [Member] USD ($) | Jun. 12, 2014 Misco Solutions B.V. [Member] USD ($) | Jun. 12, 2014 Misco Solutions B.V. [Member] EUR (€) | Dec. 31, 2014 Misco Solutions B.V. [Member] Client Lists [Member] USD ($) | Jun. 12, 2014 Misco Solutions B.V. [Member] Client Lists [Member] Amortizable Intangible Assets One [Member] | Jun. 12, 2014 Misco Solutions B.V. [Member] Client Lists [Member] Amortizable Intangible Assets Two [Member] | Jun. 12, 2014 Misco Solutions B.V. [Member] Trademarks [Member] USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  |  |  |  |  | $ 7.3 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = syx_MiscoSolutionsBVMember | € 5.4 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = syx_MiscoSolutionsBVMember |  |  |  |  |  |  |
Escrow deposit to secure sellers' indemnification obligations |  |  |  |  |  |  |  |  | 0.6 syx_EscrowDepositToSecureSellersIndemnificationObligations / us-gaap_BusinessAcquisitionAxis = syx_MiscoSolutionsBVMember | 0.4 syx_EscrowDepositToSecureSellersIndemnificationObligations / us-gaap_BusinessAcquisitionAxis = syx_MiscoSolutionsBVMember |  |  |  |
Duration period of escrow deposit |  |  |  |  |  | 1 year | 1 year |  |  |  |  |  |  |
Goodwill | 3.9 us-gaap_Goodwill | 2.4 us-gaap_Goodwill | 2.4 us-gaap_Goodwill |  |  |  |  |  | 1.5 us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = syx_MiscoSolutionsBVMember |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross Carrying Amount |  |  |  |  |  |  |  | 1.0 us-gaap_FinitelivedIntangibleAssetsAcquired1 / us-gaap_BusinessAcquisitionAxis = syx_MiscoSolutionsBVMember |  |  | 1.0 us-gaap_FinitelivedIntangibleAssetsAcquired1 / us-gaap_BusinessAcquisitionAxis = syx_MiscoSolutionsBVMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember |  |  | 0.2 us-gaap_FinitelivedIntangibleAssetsAcquired1 / us-gaap_BusinessAcquisitionAxis = syx_MiscoSolutionsBVMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember
Accumulated Amortization | $ 7.0 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization | $ 5.6 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization |  | $ 2.6 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember | $ 2.2 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember |  |  | $ 0.1 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_BusinessAcquisitionAxis = syx_MiscoSolutionsBVMember |  |  | $ 0.1 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_BusinessAcquisitionAxis = syx_MiscoSolutionsBVMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember |  |  |
Percentage of Expected Amortization of Finite Intangible Assets |  |  |  |  |  |  |  |  |  |  |  | 62.00%syx_PercentageOfExpectedAmortizationOfFiniteIntangibleAssets / us-gaap_BusinessAcquisitionAxis = syx_MiscoSolutionsBVMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = syx_AmortizableIntangibleAssetsOneMember | 38.00%syx_PercentageOfExpectedAmortizationOfFiniteIntangibleAssets / us-gaap_BusinessAcquisitionAxis = syx_MiscoSolutionsBVMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = syx_AmortizableIntangibleAssetsTwoMember |
Useful life of intangible assets |  |  |  |  |  |  |  |  |  |  |  | 10 years | 4 years |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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