Note 10 - Income Taxes (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 0
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	0	$ 0
Unrecognized Tax Benefits, Income Tax Penalties Expense	0	0	$ 0
Unrecognized Tax Benefits, Income Tax Penalties Accrued	$ 0	$ 0	$ 0