XML 35 R22.htm IDEA: XBRL DOCUMENT v3.5.0.2
Note 6 - Deferred Service Contract Revenue (Tables)
 6 Months Ended
Jun. 30, 2016
Notes Tables  
Deferred Revenue, by Arrangement, Disclosure [Table Text Block]
 
 
Three Months Ended
 
 
Six Months Ended
 
 
 
June 30,
 
 
June 30,
 
 
 
2016
 
 
2015
 
 
2016
 
 
2015
 
Beginning Balance
   $ 10,512     $ 12,528     $ 10,469     $ 12,949  
Add: Payments received
     3,045       2,250       6,308       5,052  
Less: Revenue recognized
     (3,334
)
     (3,232
)
     (6,554
)
     (6,455
)
Ending Balance
   $ 10,223     $ 11,546     $ 10,223     $ 11,546