Note 6 - Dividends (Details) (Paid Quarterly [Member], USD $)	3 Months Ended
	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2013	Mar. 31, 2013
Paid Quarterly [Member]
Note 6 - Dividends (Details) [Line Items]
Common Stock, Dividends, Per Share, Declared	$ 0.025	$ 0.025	$ 0.017	$ 0.017