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Bank Guarantees (Details Narrative) - Performance Guarantee	12 Months Ended
	Feb. 28, 2017 USD ($)
Cash on deposit with a foreign bank utilized to collateralize guarantees issued by the bank	$ 77,543
Expiration of bank guarantees	The guarantees expire at various dates in 2017.

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- References

No definition available.

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Namespace Prefix:	SOTK_
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Balance Type:	na
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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

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Balance Type:	credit
Period Type:	instant

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- Details

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