Quarterly report pursuant to Section 13 or 15(d)

Deferred Revenues and Customer Advances (Tables)

v3.10.0.1
Deferred Revenues and Customer Advances (Tables)
9 Months Ended
Sep. 30, 2018
Deferred Revenues and Customer Advances [Abstract]  
Schedule of deferred revenues and customer advances

    September 30, 
2018
(unaudited)
    December 31,
2017
 
             
Customer advances on equipment sales   $ 3,123,000     $ 2,720,000  
Prepaid license fees     1,450,000       2,550,000  
Total deferred revenues and customer advances   $ 4,573,000     $ 5,270,000