Annual report pursuant to Section 13 and 15(d)

Debt - CorEnergy Credit Facilities (Details)

v3.8.0.1
Debt - CorEnergy Credit Facilities (Details) - USD ($)
 1 Months Ended 12 Months Ended
Jul. 28, 2017
Jul. 08, 2015
Jun. 29, 2015
Nov. 24, 2014
Jul. 07, 2015
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Sep. 26, 2014
Line of Credit Facility [Line Items]                  
Borrowed against the revolver           $ 10,000,000 $ 44,000,000 $ 45,392,332  
Long-term debt outstanding           152,777,437 200,632,880    
Regions [Member] | Revolving Credit Facility [Member]                  
Line of Credit Facility [Line Items]                  
Face amount       $ 90,000,000         $ 30,000,000
Subsidiaries [Member] | Regions [Member] | Revolving Credit Facility [Member]                  
Line of Credit Facility [Line Items]                  
Face amount       $ 3,000,000          
Parent Company [Member]                  
Line of Credit Facility [Line Items]                  
Borrowed against the revolver           10,000,000 $ 44,000,000 $ 42,000,000  
LIBOR [Member]                  
Line of Credit Facility [Line Items]                  
Basis spread on variable rate       3.50%          
Minimum [Member] | LIBOR [Member]                  
Line of Credit Facility [Line Items]                  
Basis spread on variable rate         2.75%        
Maximum [Member] | LIBOR [Member]                  
Line of Credit Facility [Line Items]                  
Basis spread on variable rate         3.50%        
Line of Credit [Member]                  
Line of Credit Facility [Line Items]                  
Face amount   $ 153,000,000              
Line of Credit [Member] | Revolving Credit Facility [Member]                  
Line of Credit Facility [Line Items]                  
Face amount   105,000,000     $ 93,000,000        
Borrowed against the revolver     $ 42,000,000            
Monthly principal periodic payment   900,000       1,600,000      
Line of Credit [Member] | Amended And Restated CorEnergy Credit Facility [Member]                  
Line of Credit Facility [Line Items]                  
Face amount $ 161,000,000                
Borrowed against the revolver $ 10,000,000                
Debt instrument term 5 years                
Remaining borrowing capacity           140,500,000      
Line of Credit [Member] | Subsidiaries [Member] | Revolving Credit Facility [Member]                  
Line of Credit Facility [Line Items]                  
Face amount   3,000,000              
Line of Credit [Member] | Parent Company [Member] | Term Loan [Member]                  
Line of Credit Facility [Line Items]                  
Face amount   $ 45,000,000              
Line of Credit [Member] | Minimum [Member] | LIBOR [Member] | Amended And Restated CorEnergy Credit Facility [Member]                  
Line of Credit Facility [Line Items]                  
Basis spread on variable rate 2.75%                
Line of Credit [Member] | Maximum [Member] | LIBOR [Member] | Amended And Restated CorEnergy Credit Facility [Member]                  
Line of Credit Facility [Line Items]                  
Basis spread on variable rate 3.75%                
CorEnergy Revolver [Member] | Line of Credit [Member] | Revolving Credit Facility [Member]                  
Line of Credit Facility [Line Items]                  
Face amount           160,000,000      
Extinguishment of debt           44,000,000      
CorEnergy Revolver [Member] | Line of Credit [Member] | Amended And Restated CorEnergy Credit Facility [Member]                  
Line of Credit Facility [Line Items]                  
Face amount $ 160,000,000                
MoGas Revolver [Member] | Line of Credit [Member] | Revolving Credit Facility [Member]                  
Line of Credit Facility [Line Items]                  
Face amount       $ 3,000,000.0   1,000,000      
MoGas Revolver [Member] | Line of Credit [Member] | Amended And Restated CorEnergy Credit Facility [Member]                  
Line of Credit Facility [Line Items]                  
Face amount 1,000,000                
Remaining borrowing capacity           1,000,000      
Long-term debt outstanding           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                
CorEnergy Term Loan [Member] | Line of Credit [Member] | Term Loan [Member]                  
Line of Credit Facility [Line Items]                  
Face amount           $ 45,000,000