Note 8 - Income Taxes (Tables)

9 Months Ended

Sep. 30, 2013

Income Tax Disclosure [Abstract]

Schedule Of Income Tax Expense Benefit And Effective Income Tax Rate [Table Text Block]

	Three Months Ended September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
Income tax expense	$	4,491		$	10,035		$	9,715		$	19,250
Effective income tax rate		38.8	%		38.7	%		42.6	%		38.9	%