Quarterly report pursuant to Section 13 or 15(d)

Debt - Pinedale Credit Facility (Details)

v3.8.0.1
Debt - Pinedale Credit Facility (Details) - USD ($)
Dec. 29, 2017
Mar. 30, 2016
Mar. 31, 2018
Dec. 31, 2017
Dec. 20, 2012
Line of Credit Facility [Line Items]          
Principal balance     $ 39,867,493 $ 40,745,354  
Pinedale LP [Member] | Amended Pinedale Term Credit Facility [Member]          
Line of Credit Facility [Line Items]          
Debt term 5 years        
Face amount $ 41,000,000.0        
Coupon rate percentage 6.50%        
Principal payment $ 294,000        
Pinedale Liquids Gathering System [Member]          
Line of Credit Facility [Line Items]          
Net assets     $ 140,600,000    
Secured Debt [Member] | Pinedale LP [Member] | Secured Term Credit Facility [Member]          
Line of Credit Facility [Line Items]          
Maximum borrowing capacity         $ 70,000,000
Principal balance   $ 58,500,000      
Basis spread on variable rate   1.00%      
General Partner [Member] | Pinedale Liquids Gathering System [Member] | Pinedale GP [Member]          
Line of Credit Facility [Line Items]          
Controlling economic interest     81.05%    
Value of controlling economic interest   $ 47,400,000      
Maximum [Member] | Secured Debt [Member] | LIBOR [Member] | Pinedale LP [Member] | Secured Term Credit Facility [Member]          
Line of Credit Facility [Line Items]          
Basis spread on variable rate   7.00%