Note 10 - Income Taxes (Details Textual)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			35.00%	35.00%
Effective Income Tax Rate Reconciliation, Percent	38.40%	38.20%	40.00%	38.10%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent			4.50%	3.80%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent			1.60%	0.50%
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent			(0.20%)
Effective Income Tax Rate Reconciliation, Tax Contingency, State and Local, Percent			(0.90%)	0.20%