Income Taxes (Details Textual) (USD $)	9 Months Ended
Nov. 30, 2014
Income Taxes (Textual)
Operating loss carryforwards, net	$ 12,944,000us-gaap_OperatingLossCarryforwards
Operating loss carryforwards, Expiration dates	Nov. 30, 2031
Valuation allowance recorded on deferred tax assets percentage	100.00%
Operating Loss Carryforwards, Limitations on Use	Should a cumulative change in the ownership of more than 50% occur within a three-year period, there could be an annual limitation on loss carryforwards.
Cumulative change in ownership percentage	50.00%
Period for cumulative change in ownership	3 years

Cumulative change in ownership percentage.

No definition available.

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- Details

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Period Type:	duration

- Definition

Period for cumulative change in ownership.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Valuation allowance recorded on deferred tax assets percentage.

+ References

No definition available.

+ Details

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Namespace Prefix:	sodi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319

+ Details

Name:	us-gaap_OperatingLossCarryforwards
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Balance Type:	debit
Period Type:	instant

- Definition

Expiration date of each operating loss carryforward included in operating loss carryforward, in CCYY-MM-DD format.

+ References

+ Details

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Period Type:	duration

- Definition

A description of the limitations on the use of all operating loss carryforwards available to reduce future taxable income.

+ References

No definition available.

+ Details

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