OTHER INTANGIBLE ASSETS, NET

12 Months Ended

Dec. 31, 2013

Intangible Assets, Net (Excluding Goodwill) [Abstract]

8. OTHER INTANGIBLE ASSETS, NET

Intangible assets are generally the result of acquisitions and consist primarily of purchased technology, customer related intangibles, and trademarks. Intangible assets are amortized over useful lives that generally range between 1 and 20 years.

The following table summarizes the intangible assets acquired (including their weighted-average useful lives) by the Corporation during 2013 and 2012. No indefinite lived intangible assets were acquired in 2013 or 2012.



(In thousands, except years data)	2013			2012
	Amount		Years	Amount		Years
Technology	$	21,101	13.5	$	46,832	13.9
Customer related intangibles	73,146		16.9	122,047		15.6
Other intangible assets	8,504		3.3	16,641		8.1
Total	$	102,751	15.1	$	185,520	14.6

The following tables present the cumulative composition of the Corporation’s intangible assets as of December 31:



(In thousands)
2013	Gross		Accumulated Amortization			Net
Technology	$	213,888	$	(88,644	)	$	125,244
Customer related intangibles	430,604		(127,194		)	303,410
Other intangible assets	66,436		(23,711		)	42,725
Total	$	710,928	$	(239,549	)	$	471,379



(In thousands)
2012	Gross		Accumulated Amortization			Net
Technology	$	186,869	$	(76,067	)	$	110,802
Customer related intangibles	337,558		(95,880		)	241,678
Other intangible assets	86,157		(19,616		)	66,541
Total	$	610,584	$	(191,563	)	$	419,021

Amortization expense for the years ended December 31, 2013, 2012, and 2011 was $49.9 million, $31.1 million, and $28.8 million, respectively. The estimated future amortization expense of intangible assets is as follows:



(In thousands)
2014	$	46,832
2015	43,746
2016	42,791
2017	42,172
2018	40,586