Quarterly Financial Information

12 Months Ended

Dec. 31, 2013

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Information

Quarterly Financial Information (Unaudited)

	Three Months Ended
	March 31, 2013		June 30, 2013		September 30, 2013		December 31, 2013
Net sales	$	864,647	$	939,047	$	1,004,165	$	951,625
Gross profit	227,809		273,487		304,471		295,671
Income from operations	194,055		235,227		266,602		257,580
Net income	123,347		145,816		170,290		170,972
Basic earnings per common share (1)	$	1.84	$	2.18	$	2.55	$	2.56
Diluted earnings per common share (1)	$	1.84	$	2.17	$	2.54	$	2.54
	Three Months Ended
	March 31, 2012		June 30, 2012		September 30, 2012		December 31, 2012
Net sales	$	1,034,867	$	913,958	$	821,175	$	801,041
Gross profit	172,637		201,896		172,179		190,248
Income from operations	145,625		170,978		142,517		156,231
Net income	87,813		115,501		86,964		95,277
Basic earnings per common share (1)	$	1.32	$	1.73	$	1.30	$	1.43
Diluted earnings per common share (1)	$	1.31	$	1.72	$	1.30	$	1.42

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(1) Basic and diluted earnings per common share ("EPS") for each quarter is computed using the weighted average shares outstanding during that quarter, while EPS for the year is computed using the weighted average shares outstanding for the year. As a result, the sum of the EPS for each of the four quarters may not equal the EPS for the year.