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Property and Equipment (Tables)
12 Months Ended
Dec. 31, 2013
Property Plant And Equipment [Abstract]  
Depreciation and Amortization on Property and Equipment Using the Straight-Line Method

Depreciation on property and equipment is calculated using the straight-line method over the estimated useful lives of the assets, generally two to seven years. Leasehold improvements are amortized using the straight-line method over the shorter of the estimated useful life or the lease term.

 

     December 31, 2013     December 31, 2012  

Office furniture and fixtures

   $ 762      $ 420   

Equipment

     3,127        1,886   

Leasehold improvements

     1,137        1,083   
  

 

 

   

 

 

 

Gross property and equipment

     5,026        3,389   

Less accumulated depreciation and amortization

     (2,631     (1,936
  

 

 

   

 

 

 

Property and equipment, net

   $ 2,395      $ 1,453   
  

 

 

   

 

 

 
Future Minimum Lease Payments under Non-Cancelable Operating Leases

Future minimum lease payments under non-cancelable operating leases are as follows:

 

Year ending December 31:

   Operating
Leases
 

2014

   $ 1,074   

2015

     1,112   

2016

     808   

2017

     3   

2018

     —    

Thereafter

     —    
  

 

 

 

Total minimum lease payments

   $ 2,997   
  

 

 

 
Operating Leases Rent Expense

Rent expense on the operating leases are as follows:

 

     Year Ended
December 31,
2013
     Year Ended
December 31,
2012
     Year Ended
December 31,
2011
 

Rent expense

   $ 925       $ 776       $ 866