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Deferred Revenue
9 Months Ended
Sep. 30, 2012
Deferred Revenue [Abstract]  
Deferred Revenue

8. Deferred Revenue

Deferred revenue consists of the following:

 

 

 

 

 

September  30,

 

December 31,

 

2012

 

2011

 

 

 

 

Product shipped, revenue deferred

$
1,872,655 

 

$
2,001,160 

Customer deposits

447,700 

 

1,156,900 

Deferred service and license fees

5,874,468 

 

5,696,959 

 

8,194,823 

 

8,855,019 

Less: Long-term deferred revenue

(742,805)

 

(634,713)

Total current deferred revenue

$
7,452,018 

 

$
8,220,306