Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Information

SUPPLEMENTARY DATA—QUARTERLY FINANCIAL DATA

(Unaudited)

The following table summarizes the Company's quarterly financial data for the past two years ended December 31:

	2020
(in thousands, except per share amounts)	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Net sales	$	568,228	$	316,611	$	701,092	$	915,623
Gross profit	271,714		146,230		342,908		463,037
Net income (loss)	213		(50,707)		62,751		95,756
Earnings (loss) per share:
Basic	$	0.00	$	(0.77)	$	0.95	$	1.45
Diluted	0.00		(0.77)		0.94		1.44

	2019
(in thousands, except per share amounts)	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Net sales	$	654,608	$	526,210	$	906,793	$	954,867
Gross profit	336,729		253,591		446,695		478,655
Net income	74,177		23,029		119,258		114,025
Earnings per share:
Basic	$	1.09	$	0.34	$	1.76	$	1.69
Diluted	1.07		0.34		1.75		1.67