Note 11 - Options Outstanding (Details)	6 Months Ended
	Jun. 30, 2016 $ / shares shares
Exercise Price Range 1 [Member]
97,500 (in shares) | shares	4.8
100,079 (in dollars per share)	$ 1.59
100,079 (in dollars per share)
100,079 (in dollars per share)	$ 62.78
100,079	61 years 357 days
Exercise Price Range 2 [Member]
97,500 (in shares) | shares