Note 2 - Summary of Significant Accounting Policies (Details) (USD $)	6 Months Ended				3 Months Ended					6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2013 Grant and Contract Revenue From USA [Member]	Jun. 30, 2013 Short-Term Investments Located Outside United States [Member]	Jun. 30, 2013 Accounts Receivable [Member]	Jun. 30, 2013 Majority Owned Subsidiaries [Member]	Jun. 30, 2013 General Use [Member]	Jun. 30, 2013 Certificates of Deposit [Member] Less Than [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Cash and Cash Equivalents, at Carrying Value (in Dollars)	$ 13,245,397	$ 25,652,083	$ 13,229,680	$ 22,872,589
Cash Equivalents, at Carrying Value (in Dollars)	4,400,000	13,000,000
Cash and Highly Liquid Investments Maturity	90 days
Subsidiary Cash Total (in Dollars)								4,400,000
General Use Cash Total (in Dollars)									$ 8,800,000
Short-Term Investments Maturity										1 year
Concentration Risk, Percentage					37.70%	62.30%
Credit Term							30 days
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)	10,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares)	2,100,000
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Number of Shares Per Employee (in Shares)	400,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date	85.00%