Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2013

Goodwill and Other Intangible Assets [Abstract]

Carrying amount of goodwill on a reportable segment basis

The following represents the carrying amount of goodwill, on a reportable segment basis, as of December 31, 2012 and March 31, 2013:

	Wheels		Brillion Iron Works			Total
Balance as of December 31, 2012	$	96,283		$	4,414		$	100,697
Balance as of March 31, 2013	$	96,283		$	4,414		$	100,697

Carrying amount of other intangible assets by reportable segment

The changes in the carrying amount of other intangible assets for the period December 31, 2011 to March 31, 2012, by reportable segment, are as follows:

	Wheels			Gunite			Brillion Iron Works			Corporate			Total
Balance as of December 31, 2011	$	138,575		$	38,968		$	2,997		$	809		$	181,349
Amortization		(1,977	)		(551	)		(40	)		(128	)		(2,696	)
Balance as of March 31, 2012	$	136,598		$	38,417		$	2,957		$	681		$	178,653

The changes in the carrying amount of other intangible assets for the period December 31, 2011 to March 31, 2012, by reportable segment, are as follows:

	Wheels			Brillion Iron Works			Corporate			Total
Balance as of December 31, 2012	$	130,668		$	2,833		$	679		$	134,180
Amortization		(1,975	)		(41	)		(257	)		(2,273	)
Balance as of March 31, 2013	$	128,693		$	2,273		$	422		$	131,907

Summary of goodwill and other intangible assets

The summary of goodwill and other intangible assets is as follows:

			As of March 31, 2013						As of December 31, 2012
	Weighted Average Useful Lives		Gross Amount		Accumulated Amortization		Carrying Amount		Gross Amount		Accumulated Amortization		Carrying Amount
Goodwill		—	$	100,697	$		$	100,697	$	100,697	$		$	100,697
Other intangible assets:
Non-compete agreements		2.0	$	1,552	$	1,130	$	422	$	1,552	$	873	$	679
Trade names		—		25,200		-		25,200		25,200		-		25,200
Technology		10.0		38,849		18,284		20,565		38,849		17,547		21,302
Customer relationships		19.9		129,093		43,373		85,720		129,093		42,094		86,999
Other intangible assets:			$	194,694	$	62,787	$	131,907	$	194,694	$	60,514	$	134,180