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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents common stock warrant liability as of the balance sheet date.

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled beyond one year or the normal operating cycle, if longer.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Note 4 - Fair Value of Financial Instruments (Details) - Assets and Liabilities at Fair Value on a Recurring Basis (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2009
Assets:
Short-term investments available for sale Bonds – corporate issuances	$ 24,173,406us-gaap_AvailableForSaleSecurities	$ 37,156,381us-gaap_AvailableForSaleSecurities	$ 903,112us-gaap_AvailableForSaleSecurities
Non-recurring items as of December 31, 2014
Goodwill (Note 5)	1,976,101us-gaap_Goodwill
Recurring items as of December 31, 2014
Earn-out milestone liability (Note 12)	13,663,710
Fair Value, Inputs, Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets:
Short-term investments available for sale Bonds – corporate issuances	24,173,406	37,156,381
Fair Value, Inputs, Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets:
Short-term investments available for sale Bonds – corporate issuances	0
Fair Value, Inputs, Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]
Recurring items as of December 31, 2014
Common stock warrant liability	275,008	3,026
Earn-out milestone liability (Note 12)	13,663,710
Fair Value, Inputs, Level 3 [Member] \| Fair Value, Measurements, Nonrecurring [Member]
Non-recurring items as of December 31, 2014
In-process research and development (Note 5)	25,801,728
Goodwill (Note 5)	1,976,101
Fair Value, Measurements, Recurring [Member]
Assets:
Short-term investments available for sale Bonds – corporate issuances	24,173,406	37,156,381
Recurring items as of December 31, 2014
Common stock warrant liability	275,008	3,026
Earn-out milestone liability (Note 12)	13,663,710
Fair Value, Measurements, Nonrecurring [Member]
Non-recurring items as of December 31, 2014
In-process research and development (Note 5)	25,801,728
Goodwill (Note 5)	$ 1,976,101