Warrant Liabilities (Details) (USD $)	1 Months Ended	12 Months Ended
Aug. 19, 2014	Jan. 22, 2014	Jun. 25, 2013	Dec. 31, 2014	Dec. 31, 2013
Summary of assumptions used in connection with the valuation of warrants issued
Number of shares underlying the warrants			5,416,851sngx_NumberOfSharesUnderlyingWarrants		5,309,438sngx_NumberOfSharesUnderlyingWarrants
Exercise price			$ 1.65		$ 1.65
Volatility			140.00%		135.00%
Risk-free interest rate			1.49%		1.75%
Expected dividend yield			0.00%		0.00%
Expected warrant life (years)			5 years		4 years 6 months
Stock Price			$ 0.96us-gaap_SharePrice	$ 0.61us-gaap_SharePrice	$ 1.80us-gaap_SharePrice
Warrant [Member]
Summary of assumptions used in connection with the valuation of warrants issued
Number of shares underlying the warrants	5,059,438	5,309,438	5,416,851	4,723,357	5,309,438
Exercise price	$ 1.65	$ 1.65	$ 1.65	$ 0.61	$ 1.65
Volatility	130.00%	135.00%	140.00%	128.00%	135.00%
Risk-free interest rate	1.25%	1.30%	1.49%	1.38%	1.75%
Expected dividend yield	0.00%	0.00%	0.00%	0.00%	0.00%
Expected warrant life (years)	3 years 10 months 24 days	4 years 4 months 24 days	5 years	3 years 6 months	4 years 6 months
Stock Price	$ 2.05	$ 2.29	$ 0.96	$ 0.98	$ 1.80

Number of shares underlying the warrants.

No definition available.

Name:	sngx_NumberOfSharesUnderlyingWarrants
Namespace Prefix:	sngx_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_FairValueAssumptionsAndMethodologyForAssetsAndLiabilitiesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Agreed upon price for the exchange of the underlying asset.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

+ Details

Name:	us-gaap_FairValueAssumptionsExercisePrice
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price).

+ References

+ Details

Name:	us-gaap_FairValueAssumptionsExpectedDividendRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

+ Details

Name:	us-gaap_FairValueAssumptionsExpectedTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Risk-free interest rate assumption used in valuing an instrument.

+ References

+ Details

Name:	us-gaap_FairValueAssumptionsRiskFreeInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Weighted average expected volatility of stock price.

+ References

+ Details

Name:	us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

+ Details

Name:	us-gaap_SharePrice
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_StatementEquityComponentsAxis=us-gaap_WarrantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: