Annual report pursuant to Section 13 and 15(d)

Note 13 - Contingent Consideration (Details)

v2.4.1.9
Note 13 - Contingent Consideration (Details) (USD $)
 1 Months Ended 12 Months Ended 24 Months Ended
Aug. 31, 2011
Dec. 28, 2014
Dec. 29, 2013
Dec. 30, 2012
Aug. 31, 2013
Note 13 - Contingent Consideration (Details) [Line Items]          
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability     $ 274,000us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1 $ (650,000)us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1  
ZF Array Technologies [Member]          
Note 13 - Contingent Consideration (Details) [Line Items]          
Payments to Acquire Businesses, Gross 4,000,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= smtx_ZFArrayTechnologiesMember 		       
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents 967,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
/ us-gaap_BusinessAcquisitionAxis
= smtx_ZFArrayTechnologiesMember 		       
Business Combination, Contingent Consideration, Liability 2,400,000us-gaap_BusinessCombinationContingentConsiderationLiability
/ us-gaap_BusinessAcquisitionAxis
= smtx_ZFArrayTechnologiesMember 		       
Business Combination, Contingent Consideration Arrangements, Change in Range of Outcomes, Contingent Consideration, Liability, Value, High 2,400,000us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInTheRangeOfOutcomesContingentConsiderationLiabilityValueHigh
/ us-gaap_BusinessAcquisitionAxis
= smtx_ZFArrayTechnologiesMember 		       
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability     (274,000)us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1
/ us-gaap_BusinessAcquisitionAxis
= smtx_ZFArrayTechnologiesMember 		650,000us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1
/ us-gaap_BusinessAcquisitionAxis
= smtx_ZFArrayTechnologiesMember 		 
Business Combination, Consideration Transferred, Liabilities Incurred   $ 0us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred
/ us-gaap_BusinessAcquisitionAxis
= smtx_ZFArrayTechnologiesMember 		    $ 2,024,000us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred
/ us-gaap_BusinessAcquisitionAxis
= smtx_ZFArrayTechnologiesMember