Annual report pursuant to Section 13 and 15(d)

Deferred Revenues and Customer Advances (Tables)

v3.8.0.1
Deferred Revenues and Customer Advances (Tables)
12 Months Ended
Dec. 31, 2017
Deferred Revenues and Customer Advances [Abstract]  
Schedule of deferred revenues and customer advances
    December 31, 2017     December 31, 2016  
             
Customer advances on equipment sales   $ 2,720,000     $ 2,776,000  
Prepaid license fees     2,550,000       1,100,000  
Total deferred revenues and customer advances   $ 5,270,000     $ 3,876,000