OTHER INTANGIBLE ASSETS, NET

12 Months Ended

Dec. 31, 2011

Other Intangible Assets, Net [Abstract]

OTHER INTANGIBLE ASSETS, NET

7.       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 range between 1 and 20 years.

The following table summarizes the intangible assets acquired (including their weighted-average useful lives) by the Corporation during 2011 and 2010. No indefinite lived intangible assets were purchased in 2011 or 2010.

(In thousands, except years data)	2011			2010
	Amount		Years	Amount		Years
Technology	$	12,555	10.9	$	5,384	7.0
Customer related intangibles		36,776	7.5		10,721	11.9
Other intangible assets		5,849	7.1		295	3.0
Total	$	55,180	8.2	$	16,400	10.1

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

(In thousands)				Accumulated
2011		Gross		Amortization		Net
Technology	$	155,406	$	(65,291)	$	90,115
Customer related intangibles		219,498		(77,945)		141,553
Other intangible assets		44,555		(14,775)		29,780
Total	$	419,459	$	(158,011)	$	261,448
(In thousands)				Accumulated
2010		Gross		Amortization		Net
Technology	$	148,820	$	(54,994)	$	93,826
Customer related intangibles		189,567		(68,663)		120,904
Other intangible assets		37,005		(11,538)		25,467
Total	$	375,392	$	(135,195)	$	240,197

Amortization expense for the years ended December 31, 2011, 2010, and 2009 was $28.8 million, $26.0 million, and $26.4 million, respectively. The estimated future amortization expense of purchased intangible assets is as follows:

(In thousands)
2012	$	27,790
2013		25,638
2014		23,975
2015		22,710
2016		22,461

Included in other intangible assets at December 31, 2011 and 2010, are $9.9 million of intangible assets not subject to amortization. The Corporation completed its annual test of impairment of indefinite lived intangible assets during the fourth quarter of 2011, 2010, and 2009, and concluded there was no impairment of value.