Note 9 - Income Taxes (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 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	35.50%	41.00%	37.70%	46.50%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent			1.70%	4.70%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent			1.20%	1.70%
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent			0.20%	0.40%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Percent				5.50%