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Note 1 - Significant Accounting Policies - Summary of Receivables (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
US Department of Health and Human Services [Member] | Billed Revenues [Member]
Receivables	$ 83
US Department of Health and Human Services [Member] | Unbilled Revenues [Member]
Receivables	1,746	5,536
US Department of Health and Human Services [Member]
Receivables	1,829	5,536
Shionogi and Co. Ltd [Member] | Billed Revenues [Member]
Receivables	3,902	469
Shionogi and Co. Ltd [Member] | Unbilled Revenues [Member]
Receivables
Shionogi and Co. Ltd [Member]
Receivables	3,902	469
Green Cross Corporation [Member] | Billed Revenues [Member]
Receivables	9
Green Cross Corporation [Member] | Unbilled Revenues [Member]
Receivables
Green Cross Corporation [Member]
Receivables	9
Seqirus UK Limited [Member] | Billed Revenues [Member]
Receivables		210
Seqirus UK Limited [Member] | Unbilled Revenues [Member]
Receivables	228	28
Seqirus UK Limited [Member]
Receivables	228	238
Billed Revenues [Member]
Receivables	3,994	679
Unbilled Revenues [Member]
Receivables	1,974	5,564
Receivables	$ 5,968	$ 6,243

X

- Definition

The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value.

+ 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(4))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-06(3))
-URI http://asc.fasb.org/extlink&oid=6488278&loc=d3e604059-122996

Reference 3: 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(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(5))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

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