Note 7 - Earnings Per Common Share (Detail) - Basic and Diluted Earnings per Common Share (USD $) In Thousands, except Per Share data	3 Months Ended				6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2011		Jun. 30, 2010
Net income	$ 10,828		$ 7,809		$ 21,046		$ 15,890
Preferred dividends	(2,412)		(2,412)		(4,825)		(4,825)
Accretion on preferred stock	(170)		(161)		(338)		(320)
Net income applicable to non-vested restricted shares	(102)		(65)		(242)		(146)
Net income applicable to common shares	$ 8,144		$ 5,171		$ 15,641		$ 10,599
Weighted-average common shares outstanding:
Weighted-average common shares outstanding (basic) (in Shares)	73,259		73,028		73,205		71,756
Weighted-average diluted common shares outstanding (in Shares)	73,259		73,028		73,205		71,756
Basic earnings per share (in Dollars per share)	$ 0.11		$ 0.07		$ 0.21		$ 0.15
Diluted earnings per share (in Dollars per share)	$ 0.11		$ 0.07		$ 0.21		$ 0.15
Anti-dilutive shares not included in the computation of diluted earnings per share (1) (in Shares)	3,619	[1]	3,810	[1]	3,676	[1]	3,848	[1]

[1] Represents outstanding stock options and common stock warrants for which the exercise price is greater than the average market price of the Company's common stock.