Note 10 - Stock Option Valuation Assumptions (Details) - $ / shares		1 Months Ended	12 Months Ended
		Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	[1]
Exercise price (in dollars per share)		$ 1.58	$ 1.58
Risk-free interest rate		1.69%
Expected volatility		59.20%
Expected life in years		4 years 91 days
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate			0.00%
Black-Scholes fair value (in dollars per share)	[1]	$ 0.75	$ 0.75

[1] The fair value calculation was based on the stock options granted during the year.