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Goodwill and Other Acquisition-Related Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2011
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Intangible Assets and Goodwill
Information regarding the Company’s other acquisition-related intangible assets is as follows:
 
 
 
 
December 31, 2011
 
December 31, 2010
 
Useful
Life
(Years)
Gross
 
Accumulated
Amortization
 
Net Book
Value
 
Gross
 
Accumulated
Amortization
 
Net Book
Value
Goodwill
 
 
$
3,376

 
$
—

 
$
3,376

 
$
3,376

 
$
—

 
$
3,376

Amortizing intangible assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
In-process research and development
3 - 5
 
850

 
(270
)
 
580

 
600

 
(50
)
 
550

Patents, trademarks and other
4 - 15
 
49,653

 
(28,430
)
 
21,223

 
48,053

 
(22,547
)
 
25,506

 
 
 
50,503

 
(28,700
)
 
21,803

 
48,653

 
(22,597
)
 
26,056

Non-amortizing intangible assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
In process research and development
 
 
929

 
—

 
929

 
1,365

 
—

 
1,365

Total intangible assets
 
 
51,432

 
(28,700
)
 
22,732

 
50,018

 
(22,597
)
 
27,421

Total goodwill and intangible assets
 
 
$
54,808

 
$
(28,700
)
 
$
26,108

 
$
53,394

 
$
(22,597
)
 
$
30,797
Schedule of Intangible Asset Amortization
Amortization expense of intangible assets was approximately as follows:
 
Year ended December 31, 
 
 
2011
 
2010
 
2009
Amortization expense
$
6,103

 
$
5,904

 
$
5,407
Schedule of Changes In Gross Goodwill And Intangibles
The changes in the gross carrying amount of goodwill and intangible assets are as follows:

 
 
Goodwill and Intangible Assets
 
 
Goodwill
 
In process research and development- non-amortizing
 
In process research and development- amortizing
 
Patents, trademarks and other
 
Total
Balance as of December 31, 2009
 
$
3,376

 
$
2,330

 
$
—

 
$
47,388

 
$
53,094

Additions (deductions) during the period
 
—

 
(965
)
 
600

 
665

 
300

Balance as of December 31, 2010
 
$
3,376

 
$
1,365

 
$
600

 
$
48,053

 
$
53,394

Additions (deductions) during the period
 
—

 
(436
)
 
250

 
1,600

 
1,414

Balance as of December 31, 2011
 
$
3,376

 
$
929

 
$
850

 
$
49,653

 
$
54,808
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense
Amortization expense related to intangible assets at December 31, 2011 in each of the next five fiscal years and beyond is expected to be as follows:
 
 
2012
$
6,189

2013
5,608

2014
4,319

2015
2,350

2016
996

Thereafter
2,341

 
$
21,803