Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Revisions of Previously Issued Financial Statements (Details)

v2.4.1.9
Note 2 - Revisions of Previously Issued Financial Statements (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Mar. 29, 2015
Mar. 30, 2014
Dec. 29, 2013
Note 2 - Revisions of Previously Issued Financial Statements (Details) [Line Items]      
Impact of Restatement on Opening Retained Earnings, Net of Tax   $ (1,392)us-gaap_ImpactOfRestatementOnOpeningRetainedEarningsNetOfTax  
Net Cash Provided by (Used in) Investing Activities, Continuing Operations (451)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations (263)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations [1]  
Restatement Adjustment [Member] | Cost of Sales [Member] | Reduction to Amortization [Member]      
Note 2 - Revisions of Previously Issued Financial Statements (Details) [Line Items]      
Prior Period Reclassification Adjustment   (175)us-gaap_PriorPeriodReclassificationAdjustment
/ us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis
= smtx_ReductionToAmortizationMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember
/ us-gaap_StatementScenarioAxis
= us-gaap_RestatementAdjustmentMember
 
Restatement Adjustment [Member] | Cost of Sales [Member] | Revaluation of Derivative Forward Contracts [Member]      
Note 2 - Revisions of Previously Issued Financial Statements (Details) [Line Items]      
Prior Period Reclassification Adjustment   (151)us-gaap_PriorPeriodReclassificationAdjustment
/ us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis
= smtx_RevaluationOfDerivativeForwardContractsMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember
/ us-gaap_StatementScenarioAxis
= us-gaap_RestatementAdjustmentMember
 
Restatement Adjustment [Member] | Cost of Sales [Member]      
Note 2 - Revisions of Previously Issued Financial Statements (Details) [Line Items]      
Prior Period Reclassification Adjustment   326us-gaap_PriorPeriodReclassificationAdjustment
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember
/ us-gaap_StatementScenarioAxis
= us-gaap_RestatementAdjustmentMember
 
Restatement Adjustment [Member] | Reduction to Amortization [Member]      
Note 2 - Revisions of Previously Issued Financial Statements (Details) [Line Items]      
Prior Period Reclassification Adjustment   (175)us-gaap_PriorPeriodReclassificationAdjustment
/ us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis
= smtx_ReductionToAmortizationMember
/ us-gaap_StatementScenarioAxis
= us-gaap_RestatementAdjustmentMember
 
Restatement Adjustment [Member] | Understatement of Expenses [Member]      
Note 2 - Revisions of Previously Issued Financial Statements (Details) [Line Items]      
Prior Period Reclassification Adjustment   (1,718)us-gaap_PriorPeriodReclassificationAdjustment
/ us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis
= smtx_UnderstatementOfExpensesMember
/ us-gaap_StatementScenarioAxis
= us-gaap_RestatementAdjustmentMember
 
Restatement Adjustment [Member]      
Note 2 - Revisions of Previously Issued Financial Statements (Details) [Line Items]      
Net Cash Provided by (Used in) Investing Activities, Continuing Operations   (11)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
/ us-gaap_StatementScenarioAxis
= us-gaap_RestatementAdjustmentMember
[1]  
Unpaid Property, Plant, and Equipment [Member]      
Note 2 - Revisions of Previously Issued Financial Statements (Details) [Line Items]      
Net Cash Provided by (Used in) Investing Activities, Continuing Operations   $ 132us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
/ us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis
= smtx_UnpaidPropertyPlantAndEquipmentMember
$ 143us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
/ us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis
= smtx_UnpaidPropertyPlantAndEquipmentMember
[1] The net change of $11 related to purchases of property, plant and equipment that were paid in cash as at March 30, 2014. This was the result of additions from 2013 of $143 unpaid in cash as at December 29, 2013 paid in the first three months of 2014 offset by the additions for the first three months of 2014 unpaid in cash of $132.