Quarterly report pursuant to Section 13 or 15(d)

Debt - CorEnergy Credit Facility (Details)

v3.8.0.1
Debt - CorEnergy Credit Facility (Details) - USD ($)
 9 Months Ended 12 Months Ended
Jul. 28, 2017
Apr. 18, 2017
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Jul. 08, 2015
Line of Credit Facility [Line Items]            
Advances on revolving line of credit     $ 10,000,000 $ 44,000,000    
Line of Credit [Member] | Revolving Credit Facility [Member]            
Line of Credit Facility [Line Items]            
Principal amount           $ 153,000,000.0
Line of Credit [Member] | Amended And Restated CorEnergy Credit Facility [Member]            
Line of Credit Facility [Line Items]            
Principal amount $ 161,000,000          
Advances on revolving line of credit $ 10,000,000          
Debt term 5 years          
CorEnergy Revolver [Member] | Line of Credit [Member] | Revolving Credit Facility [Member]            
Line of Credit Facility [Line Items]            
Principal amount     160,000,000     105,000,000.0
Extinguishment of debt   $ 44,000,000 44,000,000      
CorEnergy Revolver [Member] | Line of Credit [Member] | Amended And Restated CorEnergy Credit Facility [Member]            
Line of Credit Facility [Line Items]            
Principal amount $ 160,000,000          
Available borrowing capacity     130,500,000      
CorEnergy Term Loan [Member] | Line of Credit [Member]            
Line of Credit Facility [Line Items]            
Principal amount           45,000,000.0
CorEnergy Term Loan [Member] | Line of Credit [Member] | Revolving Credit Facility [Member]            
Line of Credit Facility [Line Items]            
Extinguishment of debt 33,500,000          
MoGas Revolver [Member] | Line of Credit [Member] | Revolving Credit Facility [Member]            
Line of Credit Facility [Line Items]            
Principal amount     1,000,000     $ 3,000,000.0
MoGas Revolver [Member] | Line of Credit [Member] | Amended And Restated CorEnergy Credit Facility [Member]            
Line of Credit Facility [Line Items]            
Principal amount $ 1,000,000          
Available borrowing capacity     $ 1,000,000      
Series A Cumulative Redeemable Preferred Stock [Member]            
Line of Credit Facility [Line Items]            
Preferred stock interest rate     7.375%   7.375%  
Series A Cumulative Redeemable Preferred Stock [Member] | Preferred Stock [Member]            
Line of Credit Facility [Line Items]            
Preferred stock interest rate     7.375%      
Minimum [Member] | LIBOR [Member] | Line of Credit [Member] | Amended And Restated CorEnergy Credit Facility [Member]            
Line of Credit Facility [Line Items]            
Basis spread on variable rate 2.75%          
Maximum [Member] | LIBOR [Member] | Line of Credit [Member] | Amended And Restated CorEnergy Credit Facility [Member]            
Line of Credit Facility [Line Items]            
Basis spread on variable rate 3.75%