Annual report pursuant to Section 13 and 15(d)

Income Taxes - Additional Information (Details)

v3.10.0.1
Income Taxes - Additional Information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Income Tax Contingency [Line Items]      
Adjustment which reduced net deferred tax assets   $ 1,300  
Federal statutory income tax rate 21.00% 35.00% 35.00%
Net operating loss for federal income tax purposes $ 21,000    
NOL expiring in 2034 if not utilized 328    
NOL expiring in 2035 if not utilized 176    
NOL expiring in 2036 if not utilized 1,400    
NOL expiring in 2037 if not utilized 2,000    
Subsidiaries      
Income Tax Contingency [Line Items]      
Net operating loss for federal income tax purposes $ 17,100 $ 4,100 $ 3,000
State | Corridor Public Holdings, Inc. And Corridor Private Holdings, Inc.      
Income Tax Contingency [Line Items]      
Blended state tax rate 5.53% 3.78% 3.78%
State | Missouri | CorEnergy BBWS, Inc      
Income Tax Contingency [Line Items]      
Blended state tax rate 5.00%    
State | Missouri | Corridor MoGas      
Income Tax Contingency [Line Items]      
Blended state tax rate 5.00% 5.00% 5.00%
State | Missouri | Mowood Corridor      
Income Tax Contingency [Line Items]      
Blended state tax rate   5.00% 5.00%