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Revenue Recognition (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) Distributor Customer	Jun. 30, 2015 USD ($) Distributor Customer
Concentration Risk [Line Items]
Concentration risk percentage	100.00%	100.00%	100.00%	100.00%
Revenues	$ 1,126,000	$ 1,614,000	$ 2,459,000	$ 2,516,000
BARDA Contract [Member]
Concentration Risk [Line Items]
Revenue recognized	$ 1,700,000	$ 1,800,000	$ 3,300,000	$ 3,300,000
Americas [Member]
Concentration Risk [Line Items]
Concentration risk percentage	31.00%	17.00%	24.00%	19.00%
Revenues	$ 356,000	$ 272,000	$ 591,000	$ 477,000
Japan [Member]
Concentration Risk [Line Items]
Concentration risk percentage	61.00%	22.00%	67.00%	38.00%
Revenues	$ 690,000	$ 352,000	$ 1,657,000	$ 957,000
EMEA [Member]
Concentration Risk [Line Items]
Concentration risk percentage	7.00%	20.00%	8.00%	17.00%
Revenues	$ 74,000	$ 328,000	$ 205,000	$ 416,000
Asia Pacific [Member]
Concentration Risk [Line Items]
Concentration risk percentage	1.00%	41.00%	1.00%	26.00%
Revenues	$ 6,000	$ 662,000	$ 6,000	$ 666,000
Customer Concentration Risk [Member] | Revenue Recognized [Member]
Concentration Risk [Line Items]
Number of distributors | Distributor			2	2
Number of customers | Customer			2	3
Concentration risk percentage			76.00%	68.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Number of distributors | Distributor			2
Number of customers | Customer			1	2
Concentration risk percentage			75.00%	73.00%

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Represents the number of customers included in each grouping.

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Represents the number of distributors included in each grouping.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
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-URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13537-108611

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Amount of revenue recognized that was previously reported as deferred or unearned revenue.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 13.A.4(a).Q1 Response))
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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ 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 210.5-03.1)
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