Note 21 - Stock Based Compensation (Details) - Stock Option Award Activity (USD $)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Outstanding Stock Option Activity
Outstanding, beginning of year	5,282,366		5,879,573		5,306,506
Outstanding, beginning of year	$ 40.83		$ 41.29		$ 42.69
Outstanding, end of year	4,855,916		5,282,366		5,879,573
Outstanding, end of year	$ 37.45		$ 40.83		$ 41.29
Granted (1)	257,500	[1]	237,500	[1]	1,382,500	[1]
Granted (1)	$ 28.18	[1]	$ 33.82	[1]	$ 25.33	[1]
Exercised	(18,000)		(153,665)		(704,242)
Exercised	$ 20.82		$ 32.94		$ 23.69
Forfeited	(23,750)		(10,000)		(55,710)
Forfeited	$ 25.16		$ 37.25		$ 27.46
Cancelled	(642,200)		(671,042)		(49,481)
Cancelled	$ 62.43		$ 44.25		$ 44.75

[1] Total shares granted in 2012 include 1,000,000 performance based options granted to our CEO and COO. See further discussion regarding these grants in the "Performance Based Stock Award Activity" section below.