Goodwill and Intangible Assets

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.

Goodwill of companies acquired, allocated to the company's business segments, is as follows:



	Global Components			Global ECS			Total
Balance as of December 31, 2017 (a)	$	1,264,869		$	1,205,178		$	2,470,047
Acquisitions and related adjustments	225,937			14,175			240,112
Foreign currency translation adjustment	(17,896		)	(19,146		)	(37,042		)
Balance as of June 30, 2018 (a)	$	1,472,910		$	1,200,207		$	2,673,117


(a)	The total carrying value of goodwill for all periods in the table above is reflected net of $1,026,702 of accumulated impairment charges, of which $716,925 was recorded in the global components business segment and $309,777 was recorded in the global enterprise computing solutions business segment.

Intangible assets, net, are comprised of the following as of June 30, 2018:



	Weighted-Average Life	Gross Carrying Amount		Accumulated Amortization			Net
Non-amortizable trade names	indefinite	$	101,000	$	—		$	101,000
Customer relationships	10 years	426,441		(201,988		)	224,453
Developed technology	5 years	6,340		(3,677		)	2,663
Amortizable trade name	5 years	2,408		(1,560		)	848
		$	536,189	$	(207,225	)	$	328,964

Intangible assets, net, are comprised of the following as of December 31, 2017:



	Weighted-Average Life	Gross Carrying Amount		Accumulated Amortization			Net
Non-amortizable trade names	indefinite	$	101,000	$	—		$	101,000
Customer relationships	10 years	440,167		(259,337		)	180,830
Developed technology	5 years	6,340		(3,043		)	3,297
Amortizable trade name	5 years	2,409		(1,321		)	1,088
		$	549,916	$	(263,701	)	$	286,215

During the second quarter of 2018 and 2017, the company recorded amortization expense related to identifiable intangible assets of $11,955 and $12,364, respectively. During the first six months of 2018 and 2017, amortization expense related to identifiable intangible assets was $25,475 and $25,264, respectively.