Annual report pursuant to Section 13 and 15(d)

Management Agreement (Details)

v3.19.3.a.u2
Management Agreement (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Aug. 15, 2019
Aug. 12, 2019
Jun. 29, 2015
Management Agreement [Line Items]            
Percentage of directors to reach majority 0.6667%          
Number of days prior to written notice to terminate 30 days          
Percentage of fees of the last 4 quarters 300.00%          
Corridor Infra Trust Management            
Management Agreement [Line Items]            
Quarterly management fee percentage 0.25%          
Annual management fee percentage 1.00%          
Quarterly incentive fee percentage in relation to distribution threshold 10.00%          
Distribution threshold (in dollars per share) $ 0.625          
Incentive fees waived $ 470   $ 100      
Incentive Fee 658   595      
General and Administrative Expense | Corridor Infra Trust Management            
Management Agreement [Line Items]            
Management Fee 6,800 $ 7,600 7,200      
Administrative Fee $ 264 $ 280 $ 269      
Administrative Agreement            
Management Agreement [Line Items]            
Annual rate percentage of managed assets 0.04%          
Minimum annual fee $ 30          
5.875% Unsecured Convertible Senior Notes | Convertible Debt            
Management Agreement [Line Items]            
Effective interest rate 5.875% 0.00%   5.875% 5.875%  
7.00% Unsecured Convertible Senior Notes | Convertible Debt            
Management Agreement [Line Items]            
Effective interest rate 7.00% 7.00%       7.00%