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Deferred Gross Profit (Tables)
 6 Months Ended
Jun. 30, 2013
Deferred Gross Profit [Abstract]  
Deferred Gross Profit [Table Text Block]
Deferred gross profit consists of the following (in thousands):

June 30,
2013
 
December 31,
2012
Sales of medication and supply dispensing systems and packaging equipment, which have been delivered and invoiced but not yet installed
$
38,481

 
$
30,138

Cost of revenues, excluding installation costs
(13,131
)
 
(9,366
)
Deferred gross profit
$
25,350

 
$
20,772