Note 8 - Stock Repurchase Programs (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Schedule of Common Stock Repurchased [Table Text Block]

	Year Ended December 31,
	2016		2015		2014
Shares repurchased		-		645		1,051
Average price per share	$	-	$	50.05	$	39.19
Total amount	$	-	$	32,286	$	41,198