Quarterly Financial Information (Unaudited)

12 Months Ended

Dec. 31, 2014

Quarterly Financial Information (Unaudited)

Quarterly Financial Information (Unaudited)

18. Quarterly Financial Information (Unaudited)

        Summarized quarterly financial information for each of the years ended December 31, 2014 and 2013 are as follows (in thousands, except per share amounts):

	Quarter Ended
	December 31, 2014		September 30, 2014			June 30, 2014		March 31, 2014
Net sales	$	346,363	$	329,950		$	322,802	$	289,403
Gross profit		329,611		287,466			282,620		253,953
Net income (loss)(1)		115,935		(25,237	)		111,852		137,524
Net income (loss) per share—basic	$	2.44	$	(0.53	)	$	2.35	$	2.73
Net income (loss) per share—diluted	$	2.17	$	(0.53	)	$	2.10	$	2.43

	Quarter Ended
	December 31, 2013			September 30, 2013		June 30, 2013		March 31, 2013
Net sales	$	289,017		$	302,225	$	280,606	$	245,136
Gross profit		247,519			269,290		245,175		213,833
Net (loss) income(2)		(30,314	)		62,685		79,864		62,325
Net (loss) income per share—basic	$	(0.60	)	$	1.25	$	1.60	$	1.24
Net (loss) income per share—diluted	$	(0.60	)	$	1.17	$	1.52	$	1.19

(1)	Operating results for the quarter ended September 30 2014, include $140.3 million, net of tax, charge to operating expenses related to share-based compensation expense.
(2)	Operating results for the quarter ended December 31, 2013, include $111.2 million, net of tax, charge to operating expenses related to share-based compensation expense.