XML 78 R34.htm IDEA: XBRL DOCUMENT v2.4.0.8
Unbilled Services (Tables)
 12 Months Ended
Dec. 31, 2013
Unbilled Services [Abstract]  
Unbilled services
Unbilled services consist of the following:
 
         December 31,  
       2013            2012       
          
Unbilled services
 $16,476  $19,187  
Production supplies
  1,619   1,737  
           
Total
 $18,095  $20,924