Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2020

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of Change in Net Carrying Amount of Goodwill by Segment

The change in the net carrying amount of goodwill for the years ended December 31, 2020 and 2019 by segment is as follows:

	(in thousands)
	Steel		Steel			Raw
	Mills		Products			Materials		Total
Balance, December 31, 2018	$	591,986	$	862,773		$	729,577	$	2,184,336
Acquisitions		—		12,623			—		12,623
Translation		—		4,104			—		4,104
Balance, December 31, 2019		591,986		879,500			729,577		2,201,063
Acquisitions		20,484		(821	)		—		19,663
Translation		—		8,946			—		8,946
Balance, December 31, 2020	$	612,470	$	887,625		$	729,577	$	2,229,672

Schedule of Intangible Assets

	(in thousands)
	December 31, 2020				December 31, 2019
	Gross		Accumulated		Gross		Accumulated
	Amount		Amortization		Amount		Amortization
Customer relationships	$	1,421,962	$	838,443	$	1,412,954	$	767,532
Trademarks and trade names		162,365		100,000		162,183		92,258
Other		63,822		41,685		63,807		36,968
	$	1,648,149	$	980,128	$	1,638,944	$	896,758