Note 8 - Income Taxes (Details)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%	35.00%
Effective Income Tax Rate Reconciliation, Percent	40.20%	65.50%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent	4.40%	4.70%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent	1.00%	1.60%
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent	0.20%	0.40%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Percent		24.60%