Quarterly report pursuant to Section 13 or 15(d)

CONTRACT ACCOUNTING (Schedule of Contract Liabilities on Uncompleted Contracts) (Details)

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CONTRACT ACCOUNTING (Schedule of Contract Liabilities on Uncompleted Contracts) (Details) - USD ($)
Mar. 31, 2019
Dec. 31, 2018
Revenue from Contract with Customer [Abstract]    
Billings and/or cash receipts on uncompleted contracts $ 12,039,832 $ 8,563,241
Less: Costs and estimated earnings recognized (10,790,051) (6,314,412)
Contract liabilities $ 1,249,781 $ 2,248,829