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Bank Guarantees (Details Narrative) (Performance Guarantee, USD $)	12 Months Ended
	Feb. 28, 2014
Performance Guarantee
Cash on deposit with a foreign bank utilized to collateralize guarantees issued by the bank	$ 26,729
Expiration of bank guarantees	The guarantees expire at various dates in 2014.

X

- Definition

No authoritative reference available.

+ References

No definition available.

+ Details

Name:	SOTK_ExpirationOfBankGuarantees
Namespace Prefix:	SOTK_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- 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