Note 4 - Fair Value Measurement (Details) - Projected Liabilities Based on Future Revenue - Contingent Consideration [Member] $ in Millions	12 Months Ended
	Dec. 31, 2014 USD ($)
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate	9.00%
Minimum [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Projected revenue (in millions) (in Dollars)	$ 2.1
Probability of occurrence	20.00%
Maximum [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Projected revenue (in millions) (in Dollars)	$ 3.8
Probability of occurrence	50.00%