Note 8 - Shareholders' Equity (Detail) - Outstanding Warrants and Options to Consultants and Service Providers (USD $)	Dec. 31, 2012	Dec. 31, 2011
Options for Common shares	832,763	792,763
Exercise price per share (in Dollars per share)	$ 1.30	$ 1.33
Options exercisable	550,513
Consultants and Service Providers [Member] | February 2005 [Member]
Options for Common shares	20,000
Exercise price per share (in Dollars per share)	$ 1.19
Options exercisable	20,000
Consultants and Service Providers [Member] | March 2006 [Member]
Options for Common shares	100,000
Exercise price per share (in Dollars per share)	$ 1.16
Options exercisable	100,000
Consultants and Service Providers [Member] | December 2010 [Member]
Options for Common shares	41,500
Exercise price per share (in Dollars per share)	$ 1.51
Options exercisable	20,750
Consultants and Service Providers [Member]
Options for Common shares	161,500
Options exercisable	140,750