Selected Quarterly Financial Information (Tables)

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]

Consolidated Quarterly Financial Information

The following tables set forth selected unaudited consolidated quarterly financial information for 2020 and 2019 (in thousands, except per share data):

	Quarters Ended
	December 31, 2020		September 30, 2020		June 30, 2020		March 31, 2020
Net sales	$	2,291,315	$	1,936,478	$	1,968,735	$	2,144,051
Costs of goods sold		1,948,661		1,628,915		1,644,346		1,818,715
Gross profit		342,654		307,563		324,389		325,336
Operating expenses:
Selling and administrative expenses		257,167		245,155		242,580		268,863
Severance and restructuring expenses		2,432		808		7,010		2,144
Acquisition-related expenses		13		118		611		1,466
Earnings from operations		83,042		61,482		74,188		52,863
Non-operating (income) expense:
Interest expense, net		10,434		9,115		10,219		11,826
Other (income) expense, net		693		1,301		1,098		(1,563	)
Earnings before income taxes		71,915		51,066		62,871		42,600
Income tax expense		18,527		12,160		16,486		8,639
Net earnings	$	53,388	$	38,906	$	46,385	$	33,961
Net earnings per share:
Basic	$	1.52	$	1.11	$	1.32	$	0.96
Diluted	$	1.50	$	1.10	$	1.32	$	0.95
Shares used in per share calculations:
Basic		35,098		35,077		35,060		35,233
Diluted		35,523		35,348		35,260		35,646

	Quarters Ended
	December 31, 2019			September 30, 2019			June 30, 2019		March 31, 2019
Net sales	$	2,297,156		$	1,912,547		$	1,836,021	$	1,685,466
Costs of goods sold		1,959,174			1,636,352			1,560,572		1,436,994
Gross profit		337,982			276,195			275,449		248,472
Operating expenses:
Selling and administrative expenses		266,970			223,215			199,489		191,063
Severance and restructuring expenses		1,713			2,662			680		370
Acquisition-related expenses		2,283			5,896			3,163		—
Earnings from operations		67,016			44,422			72,117		57,039
Non-operating (income) expense:
Interest expense, net		11,897			7,694			4,335		4,552
Other (income) expense, net		(458	)		(538	)		346		1,050
Earnings before income taxes		55,577			37,266			67,436		51,437
Income tax expense		12,627			10,134			17,438		12,110
Net earnings	$	42,950		$	27,132		$	49,998	$	39,327
Net earnings per share:
Basic	$	1.22		$	0.76		$	1.40	$	1.10
Diluted	$	1.20		$	0.76		$	1.38	$	1.09
Shares used in per share calculations:
Basic		35,259			35,512			35,772		35,609
Diluted		35,755			35,868			36,111		36,103