Note 14 - Stockholders' Equity (Details) - Cash Dividends Declared - Common Stock (USD $)	3 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013
Cash Dividends Declared - Common Stock [Abstract]
Declaration Date	Sep. 18, 2014	Jun. 18, 2014	Mar. 13, 2014	Dec. 10, 2013	Sep. 12, 2013	Jun. 18, 2013	Mar. 18, 2013
Record Date	Sep. 29, 2014	Jun. 30, 2014	Mar. 24, 2014	Dec. 20, 2013	Sep. 23, 2013	Jun. 28, 2013	Mar. 28, 2013
Payment Date	Oct. 27, 2014	Jul. 25, 2014	Apr. 25, 2014	Jan. 27, 2014	Oct. 25, 2013	Jul. 25, 2013	Apr. 25, 2013
Cash Dividend Per Share	$ 0.27	$ 0.27	$ 0.27	$ 0.27	$ 0.27	$ 0.27	$ 0.27