Note 11 - Stock Based Compensation and Other Benefit Plans (Detail) - Stock Option Valuation Assumptions	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Risk-free interest rate	0.68%	1.59%	1.99%
Expected life of the option in years	5 years 80 days	5 years 80 days	5 years 80 days
Expected volatility	60.30%	63.10%	62.50%