Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2019

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, 2019 and 2018 by segment is as follows:

	(in thousands)
	Steel			Steel			Raw
	Mills			Products			Materials		Total
Balance, December 31, 2017	$	745,484		$	720,997		$	729,577	$	2,196,058
Reclassifications		(153,498	)		153,498			—		—
Translation		—			(11,722	)		—		(11,722	)
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

Schedule of Intangible Assets

	(in thousands)
	December 31, 2019				December 31, 2018
	Gross		Accumulated		Gross		Accumulated
	Amount		Amortization		Amount		Amortization
Customer relationships	$	1,412,954	$	767,532	$	1,418,250	$	713,656
Trademarks and trade names		162,183		92,258		176,046		87,680
Other		63,807		36,968		67,820		32,276
	$	1,638,944	$	896,758	$	1,662,116	$	833,612