Note 6 - Dividends (Details) (USD $)	1 Months Ended			3 Months Ended		9 Months Ended
	Sep. 30, 2013	May 31, 2013	Mar. 31, 2013	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Dividends [Abstract]
Common Stock, Dividends, Per Share, Cash Paid	$ 0.025	$ 0.017	$ 0.017	$ 0.025	$ 0.017	$ 0.058	$ 0.047