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Note 1 - Summary of Receivables (Details) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
US Department of Health and Human Services [Member] | Billed Revenues [Member] |  |
Receivables |  |
US Department of Health and Human Services [Member] | Unbilled Revenues [Member] |  |
Receivables | $ 5,536 | $ 2,778
US Department of Health and Human Services [Member] |  |
Receivables | 5,536 | 2,778
Shionogi and Co. Ltd [Member] | Billed Revenues [Member] |  |
Receivables | $ 469 | $ 1,071
Shionogi and Co. Ltd [Member] | Unbilled Revenues [Member] |  |
Receivables |  |
Shionogi and Co. Ltd [Member] |  |
Receivables | $ 469 | $ 1,071
CSL Limited [Member | Billed Revenues [Member] |  |
Receivables | 210 |
CSL Limited [Member | Unbilled Revenues [Member] |  |
Receivables | 28 |
CSL Limited [Member |  |
Receivables | 238 |
Billed Revenues [Member] |  |
Receivables | 679 | 1,071
Unbilled Revenues [Member] |  |
Receivables | 5,564 | 2,778
Receivables | $ 6,243 | $ 3,849

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- 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 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Subparagraph a -Article 5 + Details
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