Cost in Excess of Net Assets of Companies Acquired and Intangible Assets, Net

Goodwill represents the excess of the cost of an acquisition over the fair value of the net assets acquired. The company tests goodwill and other indefinite-lived intangible assets for impairment annually as of the first day of the fourth quarter, or more frequently if indicators of potential impairment exist.

Cost in excess of net assets of companies acquired, allocated to the company's business segments, is as follows:



	Global Components			Global ECS			Total
Balance as of December 31, 2012 (a)	$	957,916		$	753,787		$	1,711,703
Acquisitions	6,789			—			6,789
Foreign currency translation	(4,898		)	(9,353		)	(14,251		)
Balance as of March 30, 2013 (a)	$	959,807		$	744,434		$	1,704,241


(a)	The total carrying value of cost in excess of net assets of companies acquired for all periods in the table above is reflected net of $1,018,780 of accumulated impairment charges, of which $716,925 was recorded in the global components business segment and $301,855 was recorded in the global ECS business segment.

Intangible assets, net, are comprised of the following as of March 30, 2013:



	Weighted-Average Life	Gross Carrying Amount		Accumulated Amortization			Net
Trade names	indefinite	$	179,000	$	—		$	179,000
Customer relationships	11 years	323,722		(107,157		)	216,565
Developed technology	5 years	10,416		(2,845		)	7,571
Other intangible assets	(b)	2,566		(1,730		)	836
		$	515,704	$	(111,732	)	$	403,972

Intangible assets, net, are comprised of the following as of December 31, 2012:



	Weighted-Average Life	Gross Carrying Amount		Accumulated Amortization			Net
Trade names	indefinite	$	179,000	$	—		$	179,000
Customer relationships	11 years	325,509		(100,172		)	225,337
Developed technology	5 years	11,154		(2,508		)	8,646
Other intangible assets	(b)	2,761		(1,711		)	1,050
		$	518,424	$	(104,391	)	$	414,033


(b)	Consists of non-competition agreements and sales backlog with useful lives ranging from one to three years.

Amortization expense related to identifiable intangible assets was $8,957 and $9,671 for the first quarters of 2013 and 2012, respectively.