Note 4 - Stockholder's Equity (Deficiency) (Details) - Outstanding Options Granted to Consultants for Sales and Pre-Marketing Services (USD $)	3 Months Ended
	Mar. 31, 2015
Class of Warrant or Right [Line Items]
Options for shares of common stock	161,200
Exercise price per share (in Dollars per share)	$ 29.880
Options exercisable	2,578,803
Consultants [Member] | February 2013 [Member]
Class of Warrant or Right [Line Items]
Options for shares of common stock	3,500
Exercise price per share (in Dollars per share)	$ 12.470
Options exercisable	1,582
Exercisable through	February 2023
Consultants [Member] | August 2013 [Member]
Class of Warrant or Right [Line Items]
Options for shares of common stock	5,000
Exercise price per share (in Dollars per share)	$ 21.140
Options exercisable	1,975
Exercisable through	August 2023
Consultants [Member] | October 2013 [Member]
Class of Warrant or Right [Line Items]
Options for shares of common stock	1,084
Exercise price per share (in Dollars per share)	$ 24.230
Options exercisable	276
Exercisable through	October 2023
Consultants [Member] | March 2014 [Member]
Class of Warrant or Right [Line Items]
Options for shares of common stock	16,450
Exercise price per share (in Dollars per share)	$ 39.860
Options exercisable	4,115
Exercisable through	March 2024
Consultants [Member] | May 2014 [Member]
Class of Warrant or Right [Line Items]
Options for shares of common stock	8,700
Exercise price per share (in Dollars per share)	$ 22.010
Exercisable through	May 2024
Consultants [Member] | August 2014 [Member]
Class of Warrant or Right [Line Items]
Options for shares of common stock	36,250
Exercise price per share (in Dollars per share)	$ 21.000
Exercisable through	August 2024
Consultants [Member] | November 2014 [Member]
Class of Warrant or Right [Line Items]
Options for shares of common stock	12,000
Exercise price per share (in Dollars per share)	$ 21.660
Exercisable through	November 2024
Consultants [Member]
Class of Warrant or Right [Line Items]
Options for shares of common stock	82,984
Options exercisable	7,948