Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data (Unaudited)

Quarterly Financial Data (Unaudited)

The table below summarizes the unaudited quarterly results of operations for the past two years (in thousands, except per share data):

	Quarter
	2020								2019
	First		Second		Third		Fourth		First		Second		Third		Fourth
Net sales	$	677,288	$	1,280,846	$	1,139,229	$	839,261	$	597,456	$	1,121,328	$	898,500	$	582,234
Gross profit	189,629		373,481		328,698		239,095		174,631		330,314		257,931		162,050
Net income	30,912		157,555		119,098		59,174		32,637		131,390		79,525		18,024
Earnings per share:
Basic	$	0.77	$	3.94	$	2.97	$	1.47	$	0.83	$	3.30	$	1.99	$	0.45
Diluted	$	0.75	$	3.87	$	2.92	$	1.45	$	0.80	$	3.22	$	1.95	$	0.44

The sum of basic and diluted earnings per share for each of the quarters may not equal the total basic and diluted earnings per share for the annual periods because of rounding differences and a difference in the way that in-the-money stock options are considered from quarter to quarter.