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Goodwill and intangible assets (Tables)
 12 Months Ended
Dec. 31, 2013
Goodwill and intangible assets  
Schedule of changes in goodwill

 

 

 
   Goodwill  

Balance, December 31, 2011

   $ 25,512  

Acquisition of Cloud 9

     1,232  
       
​ ​ ​ ​ ​

Balance, December 31, 2012

     26,744  

Acquisition of Endeka

     5,776  

Acquisition of AWG

     9,911  
       
​ ​ ​ ​ ​

Balance, December 31, 2013

   $ 42,431  
       
​ ​ ​ ​ ​
​ ​ ​ ​ ​
       
Schedule of changes in intangible assets

 

 

 
   Intangible
Assets		  

Balance, December 31, 2011

   $ 9,846  

Additions

     1,851  

Amortization expense

     (1,103 )
       
​ ​ ​ ​ ​

Balance, December 31, 2012

     10,594  

Additions

     15,069  

Amortization expense

     (2,250 )
       
​ ​ ​ ​ ​

Balance, December 31, 2013

   $ 23,413  
       
​ ​ ​ ​ ​
​ ​ ​ ​ ​
       
Schedule of intangible assets

Intangible assets at December 31, 2013 consist of the following:

 
   Weighted
Average
Life		   Historical
Cost		   Accumulated
Amortization		   Net  

Venue contracts

   10 years   $ 36,356   $ (19,314 ) $ 17,042  

Non-compete agreements

   5 years     3,840     (224 )   3,616  

Technology

   6 years     2,300     (441 )   1,859  

Advertiser relationships

   5 years     70     (20 )   50  

Patents, trademarks and other

   6 years     1,408     (562 )   846  
                   
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

 

       $ 43,974   $ (20,561 ) $ 23,413  
                   
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
                   

        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  
                   
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
                   
Schedule of amortization expense for fiscal years 2014 through 2018 and thereafter

 

 

Year
  Amortization
Expense		  

2014

   $ 3,681  

2015

     3,525  

2016

     3,451  

2017

     3,218  

2018

     2,370  

Thereafter

     7,168  
       
​ ​ ​ ​ ​

 

   $ 23,413  
       
​ ​ ​ ​ ​
​ ​ ​ ​ ​