v2.4.0.6
Goodwill and intangible assets (Tables)
 12 Months Ended
Dec. 31, 2012
Goodwill and intangible assets  
Schedule of changes in carrying amount of goodwill and intangible assets

The changes in the carrying amount of goodwill and intangible assets for the year ended December 31, 2012 are as follows:

 
   Balance as of
December 31,
2011		   Additions   Amortization   Balance as of
December 31,
2012		  

Goodwill

   $ 25,512   $ 1,232   $ —   $ 26,744  

Intangible assets subject to amortization

     9,846     1,851     (1,103 )   10,594  
                   

Total

   $ 35,358   $ 3,083   $ (1,103 ) $ 37,338  
                   

               The changes in the carrying amount of goodwill and intangible assets for the year ended December 31, 2011 are as follows:

 
   Balance as of
December 31,
2010		   Additions   Amortization   Balance as of
December 31,
2011		  

Goodwill

   $ 25,512   $ —   $ —   $ 25,512  

Intangible assets subject to amortization

     11,251     250     (1,655 )   9,846  
                   

Total

   $ 36,763   $ 250   $ (1,655 ) $ 35,358  
                   
Schedule of intangible assets

        Intangible assets at December 31, 2012 consist of the following:

 
   Weighted
Average
Life		   Historical
Cost		   Accumulated
Amortization		   Net  

Venue contracts

   11 years   $ 26,886   $ (17,783 ) $ 9,103  

Technology

   5 years     1,110     (93 )   1,017  

Advertiser relationships

   5 years     70     (6 )   64  

Patents, trademarks and other

   5 years     839     (429 )   410  
                   

Total

       $ 28,905   $ (18,311 ) $ 10,594  
                   

        Intangible assets at December 31, 2011 consist of the following:

 
   Weighted
Average
Life		   Historical
Cost		   Accumulated
Amortization		   Net  

Venue contracts

   11 years   $ 26,385   $ (16,874 ) $ 9,511  

Patents, trademarks and other

   6 years     391     (56 )   335  
                   

 

       $ 26,776   $ (16,930 ) $ 9,846  
                   
Schedule of amortization expense for fiscal years 2013 through 2017 and thereafter

        Amortization expense for fiscal years 2013 through 2017 and thereafter is as follows:

Year
  Amortization
Expense		  

2013

   $ 1,220  

2014

     1,175  

2015

     1,127  

2016

     1,092  

2017

     970  

Thereafter

     5,010  
       

 

   $ 10,594