Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Debt (Details)

v2.4.1.9
Note 5 - Debt (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 29, 2015
Mar. 30, 2014
Dec. 28, 2014
Depending on Fixed Charge Coverage Ratio [Member] | Canada, Dollars | Base Rate [Member] | PNC Facility [Member]      
Note 5 - Debt (Details) [Line Items]      
Debt Instrument, Basis Spread on Variable Rate 0.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= smtx_PNCFacilityMember
/ us-gaap_CurrencyAxis
= currency_CAD
/ us-gaap_StatementScenarioAxis
= smtx_DependingOnFixedChargeCoverageRatioMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember
   
United States of America, Dollars | Base Rate [Member] | PNC Facility [Member]      
Note 5 - Debt (Details) [Line Items]      
Debt Instrument, Basis Spread on Variable Rate 1.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= smtx_PNCFacilityMember
/ us-gaap_CurrencyAxis
= currency_USD
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember
   
PNC Bank [Member] | Weighted Average [Member] | Revolving Credit Facility [Member]      
Note 5 - Debt (Details) [Line Items]      
Debt Instrument, Interest Rate, Effective Percentage 4.50%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= smtx_PNCBankMember
/ us-gaap_RangeAxis
= us-gaap_WeightedAverageMember
4.00%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= smtx_PNCBankMember
/ us-gaap_RangeAxis
= us-gaap_WeightedAverageMember
 
PNC Bank [Member] | Revolving Credit Facility [Member]      
Note 5 - Debt (Details) [Line Items]      
Long-term Line of Credit (in Dollars) 20,131us-gaap_LineOfCredit
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= smtx_PNCBankMember
  $ 21,370us-gaap_LineOfCredit
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= smtx_PNCBankMember
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars) 40,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= smtx_PNCBankMember