Quarterly report pursuant to Section 13 or 15(d)

Contract Assets and Contract Liabilities - Changes in Contract Assets and Liabilities (Details)

v3.19.1
Contract Assets and Contract Liabilities - Changes in Contract Assets and Liabilities (Details)
3 Months Ended
Mar. 31, 2019
USD ($)
Revenue From Contract With Customer [Abstract]  
Cumulative adjustment due to changes in contract values $ 1,529,435
Cumulative adjustment due to changes in estimated costs at completion (2,165,818)
Revenue recognized in the period 30,392,110
Amounts reclassified to receivables (27,495,966)
Impairment of contract assets (103,093)
Total $ 2,156,668