Amount per year the company is committed to pay for license maintenance fees.

No definition available.

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- Definition

Estimated total time before approval from FDA and EU.

+ References

No definition available.

+ Details

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- Definition

Amount of costs expected to be expensed to obtain approval.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Payments under the license agreement due upon specified milestones.

+ References

No definition available.

+ Details

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Namespace Prefix:	snbp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The minimum annual royalty due 270 days after the first commercial sale of a licensed product.

+ References

No definition available.

+ Details

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- Definition

The minimum annual royalty due on the first anniversary date of the first payment.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

The minimum annual royalty due on the second anniversary date of the first payment.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

The minimum annual royalty due on the third anniversary date and subsequent anniversary dates of the first payment.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Net sales of licensed product that must be reached before milestone payments are required.

+ References

No definition available.

+ Details

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Namespace Prefix:	snbp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the number of patients enrolled.

+ References

No definition available.

+ Details

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- Definition

Royalty payment percentage of net sales as per the agreement.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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- Definition

Royalties are to be paid in period of time lasting up to 10 years from the first commercial sale of licensed product.

+ References

No definition available.

+ Details

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- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(a))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of expense related to royalty payments under a contractual arrangement such as payment for mineral and drilling rights and use of technology or intellectual property.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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- Details

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Data Type:	na
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- Details

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- Details

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Data Type:	na
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- Details

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Data Type:	na
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- Details

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- Details

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Note 7 - Commitments and Contingencies (Details Textual)		12 Months Ended
	Dec. 22, 2011 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Accounts Payable, Current		$ 1,196,000	$ 1,245,000
SBP - 101 [Member]
Number of Patients Enrolled		29
Expected Cost of Approval		$ 200,000,000
Indemnification Agreement [Member]
Loss Contingency Accrual		$ 0	0
Minimum [Member] \| SBP - 101 [Member]
Estimated Time for Approval		5 years
Maximum [Member] \| SBP - 101 [Member]
Estimated Time for Approval		6 years
Licensing Agreement with University of Florida Research Foundation [Member]
Royalty Term	10 years
Minimum Annual Royalties, Due 270 Days After First Commercial Sale	$ 50,000
Minimum Annual Royalties, Due on the First Anniversary Date of the First Payment	100,000
Minimum Annual Royalties, Due on the Second Anniversary Date of the First Payment	100,000
Minimum Annual Royalties, Due on the Third Anniversary Date and Subsequent Anniversary Dates of the First Payment	300,000
Annual License Maintenance Fee	10,000
Accounts Payable, Current			50,000
Licensing Agreement with University of Florida Research Foundation [Member] \| License Maintenance Fee [Member]
Royalty Expense		$ 10,000	$ 10,000
Licensing Agreement with University of Florida Research Foundation [Member] \| Milestone Payment Due Upon Enrollment of the First Subject in Phase II Clinical Trial [Member]
Milestone Payments	300,000
Licensing Agreement with University of Florida Research Foundation [Member] \| Milestone Payments Due Upon Approval of a New Drug Application [Member]
Milestone Payments	3,000,000
Licensing Agreement with University of Florida Research Foundation [Member] \| Milestone Payments Due Upon Approval to Manufacture and Market in Either European Union or Japan [Member]
Milestone Payments	2,000,000
Licensing Agreement with University of Florida Research Foundation [Member] \| Milestone Payments Due Upon First Time Annual Net Sales of Licensed Products Reach 100,000,000 [Member]
Milestone Payments	1,000,000
Net Sales Required before Milestone Payments	100,000,000
Licensing Agreement with University of Florida Research Foundation [Member] \| Milestone Payments Due Upon the First Time Annual Net Sales of Licensed Product Reaches 500,000,000 [Member]
Milestone Payments	3,000,000
Net Sales Required before Milestone Payments	$ 500,000,000
Licensing Agreement with University of Florida Research Foundation [Member] \| Minimum [Member]
Royalty Fee Percentage of Net Sales	2.50%
Licensing Agreement with University of Florida Research Foundation [Member] \| Maximum [Member]
Royalty Fee Percentage of Net Sales	5.00%