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Note 9 - Income Taxes (Details) - Income Tax Rate Reconciliation (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
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Dec. 28, 2014
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Dec. 29, 2013
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Dec. 30, 2012
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| Income Tax Rate Reconciliation [Abstract] | |||
| Federal income tax (recovery) | $ (720)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate | $ (2,763)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate | $ 1,778us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate |
| State income tax expense (recovery), net of federal tax benefit | 58us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes | (62)us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes | 96us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes |
| Change in enacted income tax rates | (469)us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate | (789)us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate | |
| Loss (income) of foreign subsidiaries taxed at different rates | 185us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential | (211)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential | |
| Change in valuation allowance | (2,524)us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance | 7,114us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance | (1,155)us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance |
| Additional (release of) income tax exposures and alternative minimum taxes | 55us-gaap_IncomeTaxReconciliationTaxSettlementsOther | (130)us-gaap_IncomeTaxReconciliationTaxSettlementsOther | |
| Deemed income inclusion of foreign subsidiary | 749us-gaap_IncomeTaxReconciliationEquityInEarningsLossesOfUnconsolidatedSubsidiary | 1,469us-gaap_IncomeTaxReconciliationEquityInEarningsLossesOfUnconsolidatedSubsidiary | 1,038us-gaap_IncomeTaxReconciliationEquityInEarningsLossesOfUnconsolidatedSubsidiary |
| Expiry of operating loss carry forwards | 3,142smtx_EffectiveIncomeTaxReconciliationExpiryOfOperatingLossCarryForwards | ||
| Permanent and other differences | 1,062us-gaap_IncomeTaxReconciliationNondeductibleExpense | (906)us-gaap_IncomeTaxReconciliationNondeductibleExpense | (2,426)us-gaap_IncomeTaxReconciliationNondeductibleExpense |
| Income tax expense (recovery) | $ 1,822us-gaap_IncomeTaxExpenseBenefit | $ 4,568us-gaap_IncomeTaxExpenseBenefit | $ (1,799)us-gaap_IncomeTaxExpenseBenefit |
| X | ||||||||||
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to the expiration of operating loss carryfowards. No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to equity in earnings (loss) of unconsolidated subsidiaries exempt from income taxes. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible expenses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other income tax settlements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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