The amount of estimated time to achieve the milestone.

No definition available.

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Period Type:	duration

- Definition

The amount of gain (loss) from the change in the fair value of earn-out milestone liability.

+ References

No definition available.

+ Details

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- Definition

The percentage of risk-adjusted assessment of each milestone.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 25
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6405-128476

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)(3)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

+ Details

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

- Definition

Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Details

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- Details

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- Details

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Note 12 - Earn-out Milestone Liability (Details Textual) - USD ($)	1 Months Ended	3 Months Ended		12 Months Ended
	Jun. 20, 2014	Sep. 30, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Gain (Loss) from Change in Fair Value of Earn out Milestone Liability		$ 1,200,000		$ 649,701	$ 733,186
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)				2,520,000	1,444,023
Indefinite-lived in Process Research and Development [Member]
Gain (Loss) from Change in Fair Value of Earn out Milestone Liability			$ (700,000)
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)			1,400,000
EGEN Inc [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 30,400,000			24,400,000
Business Combination, Consideration Transferred, Liabilities Incurred	$ 13,900,000			12,500,000	$ 13,200,000	$ 13,900,000
Gain (Loss) from Change in Fair Value of Earn out Milestone Liability				$ 600,000
EGEN Inc [Member] \| Indefinite-lived in Process Research and Development [Member]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		$ 1,400,000	$ 700,000
EGEN Inc [Member] \| Minimum [Member]
Risk Adjusted Assessment of Each Milestone	10.00%		50.00%	50.00%	50.00%
Estimated Time to Achieve the Milestone	1 year 182 days			1 year 109 days	2 years
EGEN Inc [Member] \| Maximum [Member]
Risk Adjusted Assessment of Each Milestone	67.00%		80.00%	80.00%	80.00%
Estimated Time to Achieve the Milestone	2 years 182 days			1 year 182 days	2 years 182 days