Note 6 - Share-Based Compensation (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number	103,000	103,000	103,000	103,000
Allocated Share-based Compensation Expense	$ 644	$ 1,018	$ 1,288	$ 2,036
Employee Stock Option [Member]
Allocated Share-based Compensation Expense	$ 37	$ 2,850	$ 74	$ 5,680
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	0	0	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period				7,000
Proceeds from Stock Options Exercised				$ 350
Allocated Share-based Compensation Expense			$ 1,362	$ 7,716
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	$ 3,080		3,080
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 3,376		$ 3,376