Note 9 - Income Taxes (Tables)

3 Months Ended

Mar. 31, 2015

Income Tax Disclosure [Abstract]

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

	Three Months Ended March 31,
	2015			2014
Income tax expense	$	3,940		$	859
Effective income tax rate		41.3	%		40.2	%