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Deferred Warranty Revenue and Warranty Reserve (Tables)
 12 Months Ended
Dec. 31, 2013
Product Warranties Disclosures [Abstract]  
Deferred Warranty Revenue

Deferred warranty revenue at December 31, 2013, which will be recognized as revenue, is as follows:

 

Year

    Amount  

2014

    $ 30   

2015

      31   

2016

      14   

2017

      9   

2018

      3   
  

 

 

  

Total

    $ 87   
  

 

 

  
Schedule of Warranty Activity

Activity in the warranty reserve account during the three years ended December 31, 2013 was as follows:

 

     For the years ended December 31,  
     2013     2012     2011  

Balance, beginning of period

    $ 45      $ 36      $ 61   

Provision for warranty claims

      216        139        59   

Product or cash issued to settle claims

      (145 )      (130 )      (84 ) 
  

 

 

    

 

 

    

 

 

  

Balance, end of period

    $ 116      $ 45      $ 36