Note 7 - Acquisition of EGEN, Inc. (Details) (USD $)	3 Months Ended		9 Months Ended					0 Months Ended	9 Months Ended	0 Months Ended		0 Months Ended			1 Months Ended		3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Ovarian Cancer Study Milestone [Member] EGEN, Inc. [Member]	Sep. 30, 2014 Glioblastoma Multiforme Brain Cancer Study Milestone [Member] EGEN, Inc. [Member]	Sep. 30, 2014 TheraSilence Technology Milestone [Member] EGEN, Inc. [Member]	Aug. 02, 2016 Scenario, Forecast [Member] EGEN, Inc. [Member]	Sep. 30, 2014 In Process Research and Development [Member] EGEN, Inc. [Member]	Jun. 10, 2014 Hercules Credit Agreement [Member] EGEN, Inc. [Member]	Jun. 09, 2014 Hercules Credit Agreement [Member] EGEN, Inc. [Member]	Jun. 20, 2014 EGEN, Inc. [Member] Maximum [Member]	Jun. 06, 2014 EGEN, Inc. [Member]	Jun. 20, 2014 EGEN, Inc. [Member]	Jun. 20, 2014 EGEN, Inc. [Member]		Sep. 30, 2014 EGEN, Inc. [Member]	Sep. 30, 2014 EGEN, Inc. [Member]
Note 7 - Acquisition of EGEN, Inc. (Details) [Line Items]
Business Combination, Consideration Transferred												$ 44,400,000	$ 27.6		$ 27,578,000
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High					12,400,000	12,000,000	6,000,000										30,400,000	30,400,000
Payments to Acquire Businesses, Gross										3,000,000				3,000,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in Shares)								670,070						2,712,188	670,070
Loans Payable											5,000,000
Business Combination, Consideration Transferred, Liabilities Incurred															13,878,000	[1]
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability																	0
Reporting Unit, Amount of Fair Value in Excess of Carrying Amount														2,000,000	2,000,000
Goodwill, Acquired During Period													2,000,000
Business Combination, Acquisition Related Costs	119,996		1,187,263														119,996	1,187,263
Finite-lived Intangible Assets Acquired									25,800,000
Operating Expenses	$ 6,793,787	$ 3,658,767	$ 18,658,760	$ 12,523,969													$ 699,800	$ 867,700

[1] The difference between the aggregate $30.4 million in future Earnout Payments and the $13.9 million included in the fair value of the acquisition consideration was based on the Company's risk-adjusted assessment of each milestone and utilizing a discount rate based on the estimated time to achieve the milestone. These milestone payments will be fair valued at the end of each quarter and any changein their value will be recognized in the financial statement. The Company assessed the fair value of these milestones at September 30, 2014 and concluded there was no change in the fair value from June 30, 2014.