Quarterly report pursuant to Section 13 or 15(d)

Contract Assets and Contract Liabilities - Summary of Contract Assets and Liabilities (Details)

v3.19.1
Contract Assets and Contract Liabilities - Summary of Contract Assets and Liabilities (Details) - USD ($)
3 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Revenue From Contract With Customer [Abstract]    
Contract assets $ 14,216,479 $ 12,030,000
Contract liabilities (1,874,860) (1,845,049)
Net contract assets 12,341,619 $ 10,184,951
Change in contract assets 2,186,479  
Change in contract liabilities (29,811)  
Total $ 2,156,668