Quarterly report pursuant to Section 13 or 15(d)

UNCOMPLETED CONTRACTS (Details)

v3.19.2
UNCOMPLETED CONTRACTS (Details) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Revenue Recognized $ 1,461,100 $ 2,428,500 $ 2,853,500 $ 4,324,600  
Costs and estimated earnings in excess of billings on uncompleted contracts 92,300   92,300   $ 314,300
Revenue contract liabilities 231,200   231,200   470,200
Uncompleted Contracts [Member]          
Revenue Recognized     1,286,600   499,600
Less: Billings to date     (1,194,300)   (185,300)
Costs and estimated earnings in excess of billings on uncompleted contracts 92,300   92,300   314,300
Billings to date     1,681,300   1,642,600
Revenue recognized     (1,450,100)   (1,172,400)
Revenue contract liabilities $ 231,200   $ 231,200   $ 470,200