Note 12 - Stock Incentive and Employee Benefit Plans (Details) - Stock Options And Stock Appreciation Rights By Exercise Prices Range (USD $)	12 Months Ended
	Dec. 31, 2014
Price Range 1 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding, Exercise Price - Low	$ 0.67
Outstanding, Exercise Price - High	$ 4.29
Outstanding, Number of Shares (in Shares)	10,384,020
Outstanding, Weighted Average Exercise Price	$ 3.28
Outstanding, Weighted Average Remaining Contractual Life	1 year 332 days
Exercisable, Number of Shares (in Shares)	7,900,969
Exercisable, Weighted Average Exercise Price	$ 3.28
Price Range 2 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding, Exercise Price - Low	$ 5.67
Outstanding, Exercise Price - High	$ 7.93
Outstanding, Number of Shares (in Shares)	3,522,760
Outstanding, Weighted Average Exercise Price	$ 7.39
Outstanding, Weighted Average Remaining Contractual Life	4 years 240 days
Exercisable, Number of Shares (in Shares)	70,693
Exercisable, Weighted Average Exercise Price	$ 7.39
Price Range 3 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding, Exercise Price - Low	$ 8.17
Outstanding, Exercise Price - High	$ 9.29
Outstanding, Number of Shares (in Shares)	8,184,761
Outstanding, Weighted Average Exercise Price	$ 8.42
Outstanding, Weighted Average Remaining Contractual Life	3 years 215 days
Exercisable, Number of Shares (in Shares)	1,790,721
Exercisable, Weighted Average Exercise Price	$ 8.42