Note 13 - Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2015

Notes Tables

Schedule of Quarterly Financial Information [Table Text Block]

	First		Second		Third		Fourth
	Quarter		Quarter		Quarter		Quarter
2015
Net sales	$	72,963	$	75,706	$	72,404	$	71,914
Gross profit		50,971		51,293		50,713		50,633
Income from operations		7,195		8,438		6,666		6,927
Net income		3,659		4,490		3,761		3,786
Basic earnings per share		0.07		0.09		0.07		0.08
Diluted earnings per share		0.07		0.09		0.07		0.08
2014
Net sales	$	64,379	$	66,665	$	62,806	$	63,342
Gross profit		44,933		46,502		43,458		43,999
Income from operations		6,961		7,120		3,706		3,789
Net income		3,709		3,828		1,504		1,506
Basic earnings per share		0.07		0.08		0.03		0.03
Diluted earnings per share		0.07		0.07		0.03		0.03