Note 13. Income (Loss) per Common Share (Detail) - Weighted Average Common Shares (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Net income	$ 151,164	$ 48,983	$ 67,826
Preferred stock dividends	(552)	(13,633)	(13,633)
Net income (loss) applicable to common shares	150,612	35,350	54,193
Basic weighted average common shares (in Shares)	280,956	251,146	224,933
Dilutive stock options, restricted stock, and warrants	$ 16,077	$ 18,455	$ 8,685
Diluted weighted average common shares (in Shares)	297,033	269,601	233,618
Basic earnings per common share (in Dollars per share)	$ 0.54	$ 0.14	$ 0.24
Diluted earnings per common share (in Dollars per share)	$ 0.51	$ 0.13	$ 0.23