Quarterly report pursuant to Section 13 or 15(d)

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

v3.10.0.1
Transportation and Distribution Revenue - Contract Assets and Liabilities (Details) - USD ($)
3 Months Ended 9 Months Ended
Jan. 01, 2018
Sep. 30, 2018
Sep. 30, 2018
Change In Contract With Customer, Asset [Roll Forward]      
Beginning Balance $ 328,033   $ 328,033
Cumulative Transition Adjustment Upon Adoption of ASC 606     0
Unrecognized Performance Obligations     (627,471)
Recognized Performance Obligations     559,571
Ending Balance   $ 260,133 260,133
Change In Contract With Customer, Liability [Roll Forward]      
Beginning Balance 0   0
Cumulative Transition Adjustment Upon Adoption of ASC 606 $ 3,300,000   3,307,109
Unrecognized Performance Obligations   992,000 2,976,399
Recognized Performance Obligations     0
Ending Balance   $ 6,283,508 $ 6,283,508