Note 10 - Share-Based Compensation (Details) (USD $)	0 Months Ended	3 Months Ended		6 Months Ended
	Mar. 15, 2013	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		0	0	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value (in Dollars)				$ 500,000	$ 600,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars)		800,000		800,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition				1 year 328 days
Stock Issued During Period, Shares, Restricted Stock Award, Forfeited	86,500
Share-based Compensation (in Dollars)	$ 400,000			$ 264,000	$ 351,000
Stock Repurchased During Period, Shares	30,100