Quarterly report pursuant to Section 13 or 15(d)

SEGMENT INFORMATION (Details)

v2.4.1.9
SEGMENT INFORMATION (Details) (USD $)
3 Months Ended
Apr. 04, 2015
Mar. 29, 2014
Segment Reporting Information [Line Items]    
Net sales $ 51,648,245us-gaap_SalesRevenueGoodsNet $ 49,796,358us-gaap_SalesRevenueGoodsNet
Segment net income 4,577,000synl_OperatingIncomeAllocatedToSegments 4,682,000synl_OperatingIncomeAllocatedToSegments
Acquisition related costs 440,276us-gaap_BusinessCombinationAcquisitionRelatedCosts (3,146)us-gaap_BusinessCombinationAcquisitionRelatedCosts
Change in fair value of interest rate swap 169,420us-gaap_GainLossOnDerivativeInstrumentsNetPretax 118,804us-gaap_GainLossOnDerivativeInstrumentsNetPretax
Palmer earn-out adjustment (2,483,333)us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1 0us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1
Income from continuing operations before income taxes 5,069,739us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments 3,403,534us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Metals Segment [Member]    
Segment Reporting Information [Line Items]    
Net sales 35,461,000us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= synl_MetalsSegmentMember
33,361,000us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= synl_MetalsSegmentMember
Segment net income 3,116,000synl_OperatingIncomeAllocatedToSegments
/ us-gaap_StatementBusinessSegmentsAxis
= synl_MetalsSegmentMember
3,041,000synl_OperatingIncomeAllocatedToSegments
/ us-gaap_StatementBusinessSegmentsAxis
= synl_MetalsSegmentMember
Specialty Chemicals Segment [Member]    
Segment Reporting Information [Line Items]    
Net sales 16,187,000us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= synl_SpecialtyChemicalsSegmentMember
16,435,000us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= synl_SpecialtyChemicalsSegmentMember
Segment net income 1,461,000synl_OperatingIncomeAllocatedToSegments
/ us-gaap_StatementBusinessSegmentsAxis
= synl_SpecialtyChemicalsSegmentMember
1,641,000synl_OperatingIncomeAllocatedToSegments
/ us-gaap_StatementBusinessSegmentsAxis
= synl_SpecialtyChemicalsSegmentMember
Corporate [Member]    
Segment Reporting Information [Line Items]    
Corporate 1,022,000us-gaap_GeneralAndAdministrativeExpense
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
897,000us-gaap_GeneralAndAdministrativeExpense
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
Acquisition related costs 440,000us-gaap_BusinessCombinationAcquisitionRelatedCosts
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
(3,000)us-gaap_BusinessCombinationAcquisitionRelatedCosts
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
Interest and debt expense 359,000us-gaap_InterestExpense
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
266,000us-gaap_InterestExpense
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
Change in fair value of interest rate swap 169,000us-gaap_GainLossOnDerivativeInstrumentsNetPretax
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
119,000us-gaap_GainLossOnDerivativeInstrumentsNetPretax
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
Palmer earn-out adjustment (2,483,333)us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
0us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
Income from continuing operations before income taxes 5,070,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
3,403,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
Operating Segment [Member]    
Segment Reporting Information [Line Items]    
Net sales $ 51,648,000us-gaap_SalesRevenueGoodsNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
$ 49,796,000us-gaap_SalesRevenueGoodsNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember