QUARTERLY FINANCIAL DATA (UNAUDITED) (Tables)

12 Months Ended

Dec. 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Schedule of quarterly financial data

	First		Second		Third		Fourth
2014
Net sales	$	685,062	$	728,531	$	715,777	$	683,954
Gross profit	226,336		250,267		241,609		231,085
Income before income taxes	82,426		114,866		77,785		100,736
Net income	56,453		77,332		45,689		75,212
Basic earnings per share	$	0.70	$	0.97	$	0.58	$	0.97
Diluted earnings per share	$	0.69	$	0.96	$	0.57	$	0.96
2013
Net sales	$	718,573	$	727,432	$	691,875	$	714,791
Gross profit	226,572		240,338		232,697		243,047
Income before income taxes	90,679		106,534		97,840		121,388
Net income	66,806		72,606		66,044		88,324
Basic earnings per share	$	0.81	$	0.88	$	0.81	$	1.09
Diluted earnings per share	$	0.80	$	0.87	$	0.80	$	1.07