Quarterly report pursuant to Section 13 or 15(d)

Transportation and Distribution Revenue - Balance Sheet and Income Statement (Details)

v3.10.0.1
Transportation and Distribution Revenue - Balance Sheet and Income Statement (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Jan. 01, 2018
Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]            
Transportation and distribution revenue $ 3,874,157 $ 4,775,780 $ 7,827,136 $ 9,786,370    
Deferred Tax Asset 4,115,834   4,115,834   $ 3,102,493 $ 2,244,629
Unearned revenue 5,321,069   5,321,069   6,704,826 3,397,717
Additional paid-in capital 322,815,994   322,815,994   329,324,471 331,773,716
Deferred tax benefit (604,064) $ 38,084 (1,013,341) $ (260,762)    
Balances Without Adoption of ASC 606 [Member]            
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]            
Deferred Tax Asset           2,244,629
Unearned revenue           3,397,717
Additional paid-in capital           $ 331,773,716
Balances Without Adoption of ASC 606 [Member] | ASU 2014-09 [Member]            
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]            
Transportation and distribution revenue 4,866,290   9,811,402      
Deferred Tax Asset 2,743,252   2,743,252      
Unearned revenue 29,694   29,694      
Additional paid-in capital 326,734,786   326,734,786      
Deferred tax benefit (346,705)   (498,622)      
Effect of Change Higher/(Lower) [Member] | ASU 2014-09 [Member]            
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]            
Transportation and distribution revenue (992,133)   (1,984,266)      
Deferred Tax Asset 1,372,582   1,372,582   857,864  
Unearned revenue 5,291,375   5,291,375   3,307,109  
Additional paid-in capital (3,918,792)   (3,918,792)   $ (2,449,245)  
Deferred tax benefit $ (257,359)   $ (514,719)