Annual report pursuant to Section 13 and 15(d)

MANAGEMENT AGREEMENT (Details)

v3.22.0.1
MANAGEMENT AGREEMENT (Details) - USD ($)
3 Months Ended 12 Months Ended
Sep. 16, 2021
Jul. 06, 2021
Apr. 01, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Feb. 01, 2021
Aug. 15, 2019
Aug. 12, 2019
Jun. 29, 2015
Management Agreement [Line Items]                            
Number of shares issued in transaction (in shares) 1,837,607                          
Transaction bonus               $ 1,000,000            
Reimbursements               1,600,000            
Legal fees               50,000            
Payments to investment advisors               $ 1,900,000            
Common Stock, Internalization | Internalization                            
Management Agreement [Line Items]                            
Number of shares issued in transaction (in shares) 1,153,846 1,153,846                        
Class B Common Stock, Internalization | Internalization                            
Management Agreement [Line Items]                            
Number of shares issued in transaction (in shares) 683,761 683,761                        
Series A, Internalization | Internalization                            
Management Agreement [Line Items]                            
Number of shares issued in transaction (in shares)   170,213                        
Series A Cumulative Redeemable Preferred Stock                            
Management Agreement [Line Items]                            
Preferred stock interest rate 7.375%             7.375% 7.375%          
Series A Cumulative Redeemable Preferred Stock | Internalization                            
Management Agreement [Line Items]                            
Preferred stock interest rate   7.375%                        
Corridor Infra Trust Management                            
Management Agreement [Line Items]                            
Bonus payment advance                     $ 1,000,000      
Contribution agreement, quarterly payment     $ 172,000                      
Dividends paid under agreement               $ 53,000            
Quarterly management fee percentage                 0.25%          
Annual management fee percentage       1.00%         1.00%          
Quarterly incentive fee percentage in relation to distribution threshold       10.00%         10.00%          
Distribution threshold (in dollars per share)       $ 0.625         $ 0.625          
Incentive fees waived       $ 0 $ 0 $ 0 $ 171,000     $ 470,000        
Incentive fee                   658,000        
General and Administrative Expense | Corridor Infra Trust Management                            
Management Agreement [Line Items]                            
Management fee               322,000 $ 5,100,000 6,800,000        
Administrative fee               $ 13,000 $ 203,000 $ 264,000        
Administrative Agreement                            
Management Agreement [Line Items]                            
Annual rate percentage of managed assets               0.04%            
Minimum annual fee               $ 30,000            
5.875% Unsecured Convertible Senior Notes | Convertible Debt                            
Management Agreement [Line Items]                            
Effective interest rate       5.875%       5.875% 5.875%     5.875% 5.875%  
7.00% Convertible Notes | Convertible Debt                            
Management Agreement [Line Items]                            
Effective interest rate                           7.00%