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Acquisitions (Textual) (Details) (USD $) | 0 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Nov. 21, 2014 | Jan. 03, 2015 employees | Dec. 28, 2013 | Dec. 29, 2012 | Aug. 09, 2013 | Aug. 26, 2013 | Dec. 29, 2012 employees | Aug. 21, 2012 | Aug. 21, 2014 | Aug. 21, 2015
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Intangible asset depreciation period (years) | 10 years |  |  |  |  |  |  |  |  |
Acquisition costs |  | $ 12,618,787us-gaap_IncomeLossFromContinuingOperations | $ 2,898,048us-gaap_IncomeLossFromContinuingOperations | $ 3,982,884us-gaap_IncomeLossFromContinuingOperations |  |  |  |  |  |
Employees added during acquisition (employees) |  | 30synl_BusinessCombinationEmployeesAdded |  |  |  |  |  |  |  |
Change in fair value of contingent consideration liability associated with the Palmer acquisition |  | (3,476,197)synl_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisIncreaseDecreaseInFairValueOfContingentConsiderationLiability |  |  |  |  |  |  |  |
Specialty Pipe And Tube, Inc. [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Purchase Price | 31,490,433us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = synl_SpecialtyPipeAndTubeInc.Member |  |  |  |  |  |  |  |  |
Contingent consideration payment, upper limit | 5,000,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis = synl_SpecialtyPipeAndTubeInc.Member |  |  |  |  |  |  |  |  |
Contingent consideration earn-out period (years) | 2 years | 2 years |  |  |  |  |  |  |  |
Revenue threshold for earn-out | 27,000,000synl_BusinessAcquisitionContingentConsiderationRevenueThresholdLowerRangeforEarnOutPayment / us-gaap_BusinessAcquisitionAxis = synl_SpecialtyPipeAndTubeInc.Member |  |  |  |  |  |  |  |  |
Earn-out percentage threshold | 2,000,000synl_BusinessAcquisitionContingentConsiderationEarnOutPercentageThreshold / us-gaap_BusinessAcquisitionAxis = synl_SpecialtyPipeAndTubeInc.Member |  |  |  |  |  |  |  |  |
Earn-out multiplier threshold | 2,500,000synl_BusinessAcquisitionContingentConsiderationEarnOutMultiplierThreshold / us-gaap_BusinessAcquisitionAxis = synl_SpecialtyPipeAndTubeInc.Member |  |  |  |  |  |  |  |  |
Single earn-out limit | 2,500,000synl_BusinessCombinationContingentConsiderationArrangementsRangeofOutcomesForSinglePaymentValueHigh / us-gaap_BusinessAcquisitionAxis = synl_SpecialtyPipeAndTubeInc.Member |  |  |  |  |  |  |  |  |
Cumulative revenue threshold for earn-out | 58,000,000synl_BusinessAcquisitionContingentConsiderationCumulativeRevenueThresholdLowerRangeforEarnOutPayment / us-gaap_BusinessAcquisitionAxis = synl_SpecialtyPipeAndTubeInc.Member |  |  |  |  |  |  |  |  |
Cumulative revenue threshold for earn-our calculation | 54,000,000synl_BusinessAcquisitionContingentConsiderationCumulativeRevenueThresholdLowerRangeforEarnOutPaymentCalculation / us-gaap_BusinessAcquisitionAxis = synl_SpecialtyPipeAndTubeInc.Member |  |  |  |  |  |  |  |  |
Cumulative earn-out percentage threshold | 4,000,000synl_BusinessAcquisitionContingentConsiderationCumulativeEarnOutPercentageThreshold / us-gaap_BusinessAcquisitionAxis = synl_SpecialtyPipeAndTubeInc.Member |  |  |  |  |  |  |  |  |
Cumulative earn-out multiplier threshold | 5,000,000synl_BusinessAcquisitionContingentConsiderationCumulativeEarnOutMultiplierThreshold / us-gaap_BusinessAcquisitionAxis = synl_SpecialtyPipeAndTubeInc.Member |  |  |  |  |  |  |  |  |
Estimated earn out payments, discounted | 4,774,000synl_BusinessAcquisitionContingentConsiderationEstimatedEarnOutPaymentsDiscounted / us-gaap_BusinessAcquisitionAxis = synl_SpecialtyPipeAndTubeInc.Member |  |  |  |  |  |  |  |  |
Intangible assets | 11,457,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis = synl_SpecialtyPipeAndTubeInc.Member |  |  |  |  |  |  |  |  |
Revenues |  | 2,524,000us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual / us-gaap_BusinessAcquisitionAxis = synl_SpecialtyPipeAndTubeInc.Member |  |  |  |  |  |  |  |
Income before income taxes |  | 493,000us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual / us-gaap_BusinessAcquisitionAxis = synl_SpecialtyPipeAndTubeInc.Member |  |  |  |  |  |  |  |
CRI Facility [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Purchase Price |  |  |  |  | 3,450,000us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = synl_CRIFacilityMember |  |  |  |  |
Revenues |  |  | 1,824,000us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual / us-gaap_BusinessAcquisitionAxis = synl_CRIFacilityMember |  |  |  |  |  |  |
Income before income taxes |  |  | 144,000us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual / us-gaap_BusinessAcquisitionAxis = synl_CRIFacilityMember |  |  |  |  |  |  |
CRI Tolling [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Purchase Price |  |  |  |  |  | 1,100,000us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = synl_CRITollingMember |  |  |  |
Palmer of Texas [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Purchase Price |  |  |  |  |  |  |  | 25,575,000us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember |  |
Contingent consideration payment, upper limit |  |  |  |  |  |  |  | 10,500,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember |  |
Contingent consideration earn-out period (years) |  | 3 years |  |  |  |  |  | 3 years |  |
Estimated earn out payments, discounted |  |  |  |  |  |  |  | 8,152,000synl_BusinessAcquisitionContingentConsiderationEstimatedEarnOutPaymentsDiscounted / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember |  |
Intangible assets |  |  |  |  |  |  |  | 9,000,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember |  |
Intangible asset depreciation period (years) |  |  |  |  |  |  |  | 15 years |  |
Revenues |  |  |  | 12,619,000us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember |  |  |  |  |  |
Income before income taxes |  |  |  | 977,000us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember |  |  |  |  |  |
Employees added during acquisition (employees) |  |  |  |  |  |  | 130synl_BusinessCombinationEmployeesAdded / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember |  |  |
Revised acquisition purchase price |  |  |  |  |  |  |  | 26,951,209synl_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceRevised / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember |  |
Period of maintenance capital expenditures subsequent to acquisition (months) |  |  |  |  |  |  |  | 18 months |  |
Contingent consideration payment, lower limit |  |  |  |  |  |  |  | 2,500,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueLow / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember |  |
Claw back period (years) |  |  |  |  |  |  |  | 2 years |  |
Contingency liability |  |  |  |  |  |  |  | 1,200,000us-gaap_BusinessCombinationContingentConsiderationLiability / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember |  |
Indemnification assets |  |  | 336,000us-gaap_BusinessCombinationIndemnificationAssetsAmountAsOfAcquisitionDate / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember |  |  |  |  | 1,200,000us-gaap_BusinessCombinationIndemnificationAssetsAmountAsOfAcquisitionDate / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember |  |
EBITDA threshold, lower range for earn out payment |  |  |  |  |  |  |  | 5,825,000synl_BusinessAcquisitionContingentConsiderationEbitdaThresholdLowerRangeForEarnOutPayment / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember |  |
EBITDA threshold, upper range for earn out payment |  |  |  |  |  |  |  | 6,825,000synl_BusinessAcquisitionContingentConsiderationEbitdaThresholdUpperRangeForEarnOutPayment / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember |  |
Earn out payment, above EBITDA upper range |  |  |  |  |  |  |  | 3,500,000synl_BusinessAcquisitionContingentConsiderationEarnOutPaymentForEbitdaAboveUpperRange / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember |  |
EBITDA threshold, lower range for three year earn out payment |  |  |  |  |  |  |  | 17,475,000synl_BusinessAcquisitionContingentConsiderationEbitdaThresholdThreeYearLowerRangeForEarnOutPayment / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember |  |
EBITDA threshold, upper range for three year earn out payment |  |  |  |  |  |  |  | 20,475,000synl_BusinessAcquisitionContingentConsiderationEbitdaThresholdThreeYearUpperRangeForEarnOutPayment / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember |  |
Earn out payment, between lower and upper EBITDA three year ranges |  |  |  |  |  |  |  | 7,500,000synl_BusinessAcquisitionContingentConsiderationThreeYearEarnOutPaymentEbitdaBetweenLowerAndUpperThreeYearRanges / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember |  |
Maximum three year earn out payment |  |  |  |  |  |  |  | 10,500,000synl_BusinessAcquisitionContingentConsiderationMaximumThreeYearEarnOutPayment / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember |  |
Estimated earn out payments |  |  |  |  |  |  |  | 8,500,000synl_BusinessAcquisitionContingentConsiderationEstimatedEarnOutPayments / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember |  |
Earn-out liability balance |  |  | 6,000,000synl_BusinessAcquisitionContingentConsiderationEarnOutLiability / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember |  |  |  |  |  |  |
Year 1 [Member] | Palmer of Texas [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Contingency liability |  |  | 2,500,000us-gaap_BusinessCombinationContingentConsiderationLiability / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember / us-gaap_ContingentConsiderationByTypeAxis = synl_Year1Member |  |  |  |  |  |  |
Year 2 [Member] | Palmer of Texas [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Contingent consideration payment, lower limit |  |  |  |  |  |  |  |  | 2,500,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueLow / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember / us-gaap_ContingentConsiderationByTypeAxis = synl_Year2Member |
EBITDA threshold, lower range for three year earn out payment |  |  |  |  |  |  |  |  | 5,825,000synl_BusinessAcquisitionContingentConsiderationEbitdaThresholdThreeYearLowerRangeForEarnOutPayment / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember / us-gaap_ContingentConsiderationByTypeAxis = synl_Year2Member |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Change in fair value of contingent consideration liability associated with the Palmer acquisition |  | (3,476,000)synl_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisIncreaseDecreaseInFairValueOfContingentConsiderationLiability / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember |  |  |  |  |  |  |  |
Scenario, Forecast [Member] | Year 3 [Member] | Palmer of Texas [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
EBITDA threshold, upper range for earn out payment |  |  |  |  |  |  |  |  |  | 6,825,000synl_BusinessAcquisitionContingentConsiderationEbitdaThresholdUpperRangeForEarnOutPayment / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember / us-gaap_ContingentConsiderationByTypeAxis = synl_Year3Member / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember
EBITDA threshold, lower range for three year earn out payment |  |  |  |  |  |  |  |  |  | 5,825,000synl_BusinessAcquisitionContingentConsiderationEbitdaThresholdThreeYearLowerRangeForEarnOutPayment / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember / us-gaap_ContingentConsiderationByTypeAxis = synl_Year3Member / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember
Contingent Consideration [Member] | Specialty Pipe And Tube, Inc. [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Estimated earn out payments, discount rate | 3.00%us-gaap_FairValueInputsDiscountRate / us-gaap_BusinessAcquisitionAxis = synl_SpecialtyPipeAndTubeInc.Member / us-gaap_FairValueByLiabilityClassAxis = synl_ContingentConsiderationMember |  |  |  |  |  |  |  |  |
Contingent Consideration [Member] | Palmer of Texas [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Estimated earn out payments, discount rate |  |  |  |  |  |  |  | 2.00%us-gaap_FairValueInputsDiscountRate / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember / us-gaap_FairValueByLiabilityClassAxis = synl_ContingentConsiderationMember |  |
Acquisition-related Costs [Member] | Specialty Pipe And Tube, Inc. [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Acquisition costs |  | 302,000us-gaap_IncomeLossFromContinuingOperations / us-gaap_BusinessAcquisitionAxis = synl_SpecialtyPipeAndTubeInc.Member / us-gaap_NonrecurringAdjustmentAxis = us-gaap_AcquisitionRelatedCostsMember |  |  |  |  |  |  |  |
Acquisition-related Costs [Member] | CRI Tolling [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Acquisition costs |  |  | 255,000us-gaap_IncomeLossFromContinuingOperations / us-gaap_BusinessAcquisitionAxis = synl_CRITollingMember / us-gaap_NonrecurringAdjustmentAxis = us-gaap_AcquisitionRelatedCostsMember |  |  |  |  |  |  |
Acquisition-related Costs [Member] | Palmer of Texas [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Acquisition costs |  |  |  | 881,000us-gaap_IncomeLossFromContinuingOperations / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember / us-gaap_NonrecurringAdjustmentAxis = us-gaap_AcquisitionRelatedCostsMember |  |  |  |  |  |
Professional Audit Fees [Member] | Specialty Pipe And Tube, Inc. [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Acquisition costs |  | 92,000us-gaap_IncomeLossFromContinuingOperations / us-gaap_BusinessAcquisitionAxis = synl_SpecialtyPipeAndTubeInc.Member / us-gaap_NonrecurringAdjustmentAxis = synl_ProfessionalAuditFeesMember |  |  |  |  |  |  |  |
Professional Audit Fees [Member] | CRI Tolling [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Acquisition costs |  |  | 113,000us-gaap_IncomeLossFromContinuingOperations / us-gaap_BusinessAcquisitionAxis = synl_CRITollingMember / us-gaap_NonrecurringAdjustmentAxis = synl_ProfessionalAuditFeesMember |  |  |  |  |  |  |
Professional Audit Fees [Member] | Palmer of Texas [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Acquisition costs |  |  |  | 355,000us-gaap_IncomeLossFromContinuingOperations / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember / us-gaap_NonrecurringAdjustmentAxis = synl_ProfessionalAuditFeesMember |  |  |  |  |  |
Bank and Swap Agreement Fees [Member] | CRI Tolling [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Acquisition costs |  |  | 70,000us-gaap_IncomeLossFromContinuingOperations / us-gaap_BusinessAcquisitionAxis = synl_CRITollingMember / us-gaap_NonrecurringAdjustmentAxis = synl_BankAndSwapAgreementFeesMember |  |  |  |  |  |  |
Bank and Swap Agreement Fees [Member] | Palmer of Texas [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Acquisition costs |  |  |  | 337,000us-gaap_IncomeLossFromContinuingOperations / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember / us-gaap_NonrecurringAdjustmentAxis = synl_BankAndSwapAgreementFeesMember |  |  |  |  |  |
Legal Fees [Member] | Specialty Pipe And Tube, Inc. [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Acquisition costs |  | 83,000us-gaap_IncomeLossFromContinuingOperations / us-gaap_BusinessAcquisitionAxis = synl_SpecialtyPipeAndTubeInc.Member / us-gaap_NonrecurringAdjustmentAxis = synl_LegalFeesMember |  |  |  |  |  |  |  |
Legal Fees [Member] | CRI Tolling [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Acquisition costs |  |  | 53,000us-gaap_IncomeLossFromContinuingOperations / us-gaap_BusinessAcquisitionAxis = synl_CRITollingMember / us-gaap_NonrecurringAdjustmentAxis = synl_LegalFeesMember |  |  |  |  |  |  |
Legal Fees [Member] | Palmer of Texas [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Acquisition costs |  |  |  | 93,000us-gaap_IncomeLossFromContinuingOperations / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember / us-gaap_NonrecurringAdjustmentAxis = synl_LegalFeesMember |  |  |  |  |  |
Consultant Fees [Member] | Specialty Pipe And Tube, Inc. [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Acquisition costs |  | 65,000us-gaap_IncomeLossFromContinuingOperations / us-gaap_BusinessAcquisitionAxis = synl_SpecialtyPipeAndTubeInc.Member / us-gaap_NonrecurringAdjustmentAxis = synl_ConsultantFeesMember |  |  |  |  |  |  |  |
Travel Costs [Member] | Specialty Pipe And Tube, Inc. [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Acquisition costs |  | 62,000us-gaap_IncomeLossFromContinuingOperations / us-gaap_BusinessAcquisitionAxis = synl_SpecialtyPipeAndTubeInc.Member / us-gaap_NonrecurringAdjustmentAxis = synl_TravelCostsMember |  |  |  |  |  |  |  |
Travel Costs [Member] | Palmer of Texas [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Acquisition costs |  |  |  | 25,000us-gaap_IncomeLossFromContinuingOperations / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember / us-gaap_NonrecurringAdjustmentAxis = synl_TravelCostsMember |  |  |  |  |  |
Other Expense [Member] | CRI Tolling [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Acquisition costs |  |  | 19,000us-gaap_IncomeLossFromContinuingOperations / us-gaap_BusinessAcquisitionAxis = synl_CRITollingMember / us-gaap_NonrecurringAdjustmentAxis = us-gaap_OtherExpenseMember |  |  |  |  |  |  |
Other Expense [Member] | Palmer of Texas [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Acquisition costs |  |  |  | $ 71,000us-gaap_IncomeLossFromContinuingOperations / us-gaap_BusinessAcquisitionAxis = synl_PalmerOfTexasMember / us-gaap_NonrecurringAdjustmentAxis = us-gaap_OtherExpenseMember |  |  |  |  |  |

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- Definition Business Acquisition, Contingent Consideration, Cumulative Revenue Threshold, Lower Range for Earn Out Payment Calculation + References No definition available. + Details
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