Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Oct. 01, 2016

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 nine months ended October 1, 2016, by segment is as follows (in thousands):

	Steel Mills		Steel Products		Raw Materials		Total
Balance at December 31, 2015	$	590,634	$	691,067	$	729,577	$	2,011,278
Translation		—		15,563		—		15,563
Balance at October 1, 2016	$	590,634	$	706,630	$	729,577	$	2,026,841

Schedule of Intangible Assets

Intangible assets with estimated useful lives of 5 to 22 years are amortized on a straight-line or accelerated basis and are comprised of the following (in thousands):

	October 1, 2016				December 31, 2015
	Gross Amount		Accumulated Amortization		Gross Amount		Accumulated Amortization
Customer relationships	$	1,177,629	$	551,057	$	1,185,299	$	517,817
Trademarks and trade names		156,614		64,877		155,864		57,756
Other		59,375		20,057		23,025		17,943
	$	1,393,618	$	635,991	$	1,364,188	$	593,516