Note 11 - Share Based Compensation And Employee Benefit Plans (Detail) - Non-vested Options (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Outstanding Options, shares	3,848,472
Granted	636,320
Granted (in Dollars per share)	$ 10.95	$ 8.68	$ 5.80
Vested	(515,920)
Vested (in Dollars per share)	$ 4.62
Forfeited	(20,550)
Outstanding Options, shares	4,037,266	3,848,472
Non-Vested Shares [Member]
Outstanding Options, shares	2,322,792
Non-vested, weighted average grant date fair value (in Dollars per share)	$ 5.88
Forfeited	(19,584)
Forfeited (in Dollars per share)	$ 6.72
Outstanding Options, shares	2,423,608
Non-vested, weighted average grant date fair value (in Dollars per share)	$ 7.48