Annual report pursuant to Section 13 and 15(d)

REVENUE (Details 1)

v3.19.1
REVENUE (Details 1) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Revenue from Contract with Customer [Abstract]    
Contract Assets $ 1,063,500 $ 692,400
Increase (decrease) in contract assets 371,100  
Increase (decrease) in contract liabilities 242,900  
Increase (decrease) in deferred revenue current (112,700)  
Increase (decrease) in deferred revenue non-current (49,900)  
Billings in excess of costs and estimated earnings on uncompleted contracts 470,200 227,300
Deferred revenue 191,500 304,200
Deferred revenue, non-current $ 63,200 $ 113,100