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Goodwill and Other Intangible Assets (Tables)
 9 Months Ended
Sep. 30, 2012
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill and Other Intangible Assets
Goodwill and other intangible assets as of September 30, 2012 and December 31, 2011 consisted of the following (in thousands):
 
Estimated
Useful Life
(in years)
  
As of
 
  
September 30, 2012
 
December 31, 2011
Goodwill
N/A
 
$
2,979

 
$
2,873

Other intangible assets:
 
 
 
 
 
Indefinite-lived trademarks
N/A
  
$
9,052

 
$
9,052

Patents
1 to 16
  
18,154

 
18,154

 
 
  
27,206

 
27,206

Accumulated amortization - patents
 
  
(12,028
)
 
(10,490
)
 
 
  
$
15,178

 
$
16,716