Note 4 - Earnings (Loss) Per Common Share (Detail) - Components Used in Computation of Basic and Diluted Earnings (Loss) Per Common Share (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Numerator:
Net income (loss)	$ 14,263	$ (10,519)	$ 22,786	$ (25,316)
Less: Net (income) loss allocated to preferred shareholder	(6,130)	4,554	(9,807)	10,968
Less: Net (income) loss allocated to unvested restricted stock	(15)		(12)
Net income (loss) available to common stockholders	$ 8,118	$ (5,965)	$ 12,967	$ (14,348)
Denominator:
Weighted average basic common shares outstanding (in Shares)	195,746,733	193,577,324	195,427,992	193,369,182
Stock options (in Shares)	5,593,889		5,136,047
Weighted average diluted common shares outstanding (in Shares)	201,340,622	193,577,324	200,564,039	193,369,182
Income (loss) per common share:
Basic (in Dollars per share)	$ 0.04	$ (0.03)	$ 0.07	$ (0.07)
Diluted (in Dollars per share)	$ 0.04	$ (0.03)	$ 0.06	$ (0.07)