Quarterly report pursuant to Section 13 or 15(d)

Transportation and Distribution Revenue - Contract Assets and Liabilities (Details)

v3.21.2
Transportation and Distribution Revenue - Contract Assets and Liabilities (Details) - USD ($)
6 Months Ended 12 Months Ended
Jun. 30, 2021
Dec. 31, 2020
Change In Contract With Customer, Liability [Roll Forward]    
Beginning Balance January 1 $ 6,125,728  
Ending Balance 6,147,990 $ 6,125,728
Transportation and distribution revenue    
Change In Contract With Customer, Liability [Roll Forward]    
Beginning Balance January 1 6,104,979 6,850,790
Unrecognized Performance Obligations 315,000 347,811
Recognized Performance Obligations (292,756) (1,093,622)
Ending Balance $ 6,127,223 $ 6,104,979