Note 10 - Income Taxes (Tables)

6 Months Ended

Jun. 30, 2017

Notes Tables

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

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2017			2016			2017			2016
Income tax expense	$	47,893		$	11,897		$	55,222		$	18,312
Effective income tax rate		40.4	%		40.2	%		40.5	%		40.7	%