Note 17 - Net Income (Loss) Per Share Net Income (Loss) Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income (loss)	$ 153,590		$ (12,682)		$ 531,182		$ (233,354)
Net income (loss) after assumed conversion of convertible debt	159,142		(12,682)		547,692		(233,354)
Average common shares outstanding—basic	191,050,000		171,830,000		182,357,000		162,828,000
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	2,939,000	[1]	0	[1]	2,904,000	[1]	0	[1]
Adjusted shares outstanding—diluted	238,067,000		171,830,000		230,662,000		162,828,000
Basic net income (loss) per share	$ 0.80		$ (0.07)		$ 2.91		$ (1.43)
Diluted net income (loss) per share	$ 0.67		$ (0.07)		$ 2.37		$ (1.43)
Stock Compensation Plan [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	557,240				557,240
Stock Compensation Plan and Convertible Debt Securities [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount			43,289,967				43,289,967
Convertible Debt [Member] | Convertible Senior Notes Due 2017
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities	6,342,000		0		7,665,000		0
Convertible Debt [Member] | Convertible Senior Notes Due 2019
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Adjustment for interest expense incurred on assumed conversion of convertible debt, net	$ 5,552	[2]	$ 0	[2]	$ 16,510	[2]	$ 0	[2]
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities	37,736,000		0		37,736,000		0

[1] For the three and nine months ended September 30, 2014, 557,240 shares of our common stock equivalents issued under our stock-based compensation arrangements were not included in the calculation of diluted net income per share as of such date because they were anti-dilutive. As a result of our net loss for the three and nine months ended September 30, 2013, 43,289,967 shares of our common stock equivalents issued under our stock-based compensation arrangements and convertible debt were not included in the calculation of diluted net loss per share as of such date because they were anti-dilutive.

[2] As applicable, includes coupon interest, amortization of discount and fees, and other changes in income or loss that would result from the assumed conversion.