QUARTERLY FINANCIAL DATA (UNAUDITED) (Tables)

12 Months Ended

Dec. 31, 2013

Quarterly Financial Information Disclosure [Abstract]

Schedule of quarterly financial data

	First		Second		Third		Fourth
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
2012
Net sales	$	727,122	$	744,045	$	697,552	$	684,648
Gross profit	215,265		224,997		213,362		213,032
Income before income taxes	92,919		98,157		90,889		87,605
Net income	64,243		66,319		64,765		62,084
Basic earnings per share	$	0.77	$	0.80	$	0.78	$	0.75
Diluted earnings per share	$	0.76	$	0.79	$	0.77	$	0.74