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Deferred Service Contract Revenue
3 Months Ended
Mar. 31, 2014
Deferred Service Contract Revenue [Abstract]  
Deferred Service Contract Revenue
Note 6. Deferred Service Contract Revenue

The Company generates Service revenue from the sale of extended service contracts and from time and material services provided to customers who are not under a warranty or extended service contract. Service contract revenue is recognized on a straight-line basis over the period of the applicable contract. Service revenue, from customers whose systems are not under a service contract, is recognized as the services are provided.

The following table provides changes in the deferred service contract revenue balance for the three-month periods ended March 31, 2014 and 2013 (in thousands):

 
 
March 31,
 
 
 
2014
  
2013
 
Beginning Balance
 
$
11,637
  
$
8,539
 
Add: Payments received
  
3,711
   
3,602
 
Less: Revenue recognized
  
(3,056
)
  
(2,990
)
Ending Balance
 
$
12,292
  
$
9,151
 

Costs for extended service contracts were $1.7 million for both of the three months ended March 31, 2014 and 2013.