Note 9 - Income Taxes (Tables)

9 Months Ended

Sep. 30, 2014

Income Tax Disclosure [Abstract]

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2014			2013			2014			2013
Income tax expense	$	8,608		$	4,491		$	10,343		$	9,715
Effective income tax rate		38.2	%		38.8	%		38.1	%		42.6	%