Note 10 - Stock Options and Warrants - Stock Option Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Outstanding Beg. of Year, Shares (in shares)	8,568	81,726
Outstanding Beg. of Year, Price (in dollars per share)	$ 0.95
Cancelled/Expired, Shares (in shares)	(8,568)	(73,158)
Cancelled/Expired, Price (in dollars per share)	$ 0.95
Outstanding End of Year, Shares (in shares)		8,568
Outstanding End of Year, Price (in dollars per share)		$ 0.95
Exercisable End of Year, Shares (in shares)		8,568
Exercisable End of Year, Price (in dollars per share)		$ 0.95
Minimum [Member]
Outstanding Beg. of Year, Price (in dollars per share)		0.76
Cancelled/Expired, Price (in dollars per share)		0.76
Maximum [Member]
Outstanding Beg. of Year, Price (in dollars per share)		1.235
Cancelled/Expired, Price (in dollars per share)		$ 1.235