Note 2 - Summary of Significant Accounting Policies (Detail) - Computation of Basic and Diluted Earnings Per Share (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Numerator:
Net income (loss)	$ 531,421	[1]	$ (16,417)	[1]	$ (11,724)
Less: Net (income) loss allocated to preferred shareholder	(224,408)		7,101		6,849
Less: Net (income) loss allocated to unvested restricted stock	(410)
Net income (loss) available to common stockholders for basic earnings (loss) per common share	306,603		(9,316)		(4,875)
Effect of dilutive securities:
Net income allocated to preferred shareholder	224,408
Interest on 1.25% convertible senior notes due 2032	268
Net income (loss) available to common and preferred stock for diluted earnings (loss) per share	$ 531,279		$ (9,316)		$ (4,875)
Denominator:
Weighted average basic common shares outstanding (in Shares)	201,953,799		193,909,714		105,202,857
Weighted average additional common shares outstanding if preferred shares converted to common shares (if dilutive) (in Shares)	147,812,786
Total weighted average common shares outstanding if preferred shares converted to common shares (in Shares)	349,766,585		193,909,714		105,202,857
Effect of dilutive securities:
Stock options (in Shares)	5,988,625
1.25% convertible senior notes due 2032 (in Shares)	12,576,473
Weighted average diluted shares outstanding (in Shares)	368,331,683		193,909,714		105,202,857
Income (loss) per share:
Basic (in Dollars per share)	$ 1.52	[1]	$ (0.05)	[1]	$ (0.05)
Diluted (in Dollars per share)	$ 1.44	[1]	$ (0.05)	[1]	$ (0.05)

[1] Some amounts do not add across due to rounding differences in quarterly amounts and due to the impact of differences between the quarterly and annual weighted average share calculations.