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v2.4.1.9

Bank Guarantees (Details Narrative) (Performance Guarantee, USD $) | 12 Months Ended
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Feb. 28, 2015
Performance Guarantee |
Cash on deposit with a foreign bank utilized to collateralize guarantees issued by the bank | $ 43,518 us-gaap_GuaranteeObligationsCurrentCarryingValue / us-gaap_GuaranteeObligationsByNatureAxis = us-gaap_PerformanceGuaranteeMember
Expiration of bank guarantees | The guarantees expire at various dates in 2015.

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- Definition No authoritative reference available. + References No definition available. + Details
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Namespace Prefix: | SOTK_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 + Details
Name: | us-gaap_GuaranteeObligationsCurrentCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant