v3.26.3
Borrowings - Details 11 (Details) - USD ($)
 3 Months Ended 6 Months Ended
Aug. 31, 2026
Aug. 26, 2026
Feb. 28, 2026
Feb. 06, 2026
Jan. 23, 2026
Apr. 26, 2023
Apr. 14, 2023
Aug. 31, 2026
Aug. 31, 2025
Aug. 31, 2026
Aug. 31, 2025
Borrowings [Line Items]                      
Offering costs incurred   $ 200,000         $ 30,000.00     $ 200,000  
Financing costs                   $ 4,664,515 $ 25,000
Par value, per share (in Dollars per share) $ 25             $ 25   $ 25  
Interest expense               $ 14,061,404 $ 12,372,030 $ 27,711,687 24,823,895
8.50% 2028 Notes [Member]                      
Borrowings [Line Items]                      
Aggregate principal amount           $ 7,500,000 $ 50,000,000        
Principal amount, percentage             8.50%        
Net proceeds amount           7,300,000 $ 48,400,000        
Deducting underwriting commissions amount           $ 200,000 $ 1,600,000        
Fixed interest, description           Interest on the 8.50% 2028 Notes is paid quarterly in arrears on February 28, May 31, August 31 and November 30, at a rate of 8.50% per year.          
Financing costs                   2,000,000  
Outstanding borrowings $ 57,500,000             $ 57,500,000 57,500,000 $ 57,500,000 57,500,000
Par value, per share (in Dollars per share) $ 25             $ 25   $ 25  
Interest expense               $ 1,200,000 1,200,000 $ 2,400,000 2,400,000
Amortization of deferred financing               100,000 $ 100,000 200,000 $ 200,000
8.50% 2028 Notes [Member] | Minimum [Member]                      
Borrowings [Line Items]                      
Carrying amount $ 57,500,000   $ 57,500,000         57,500,000   57,500,000  
8.50% 2028 Notes [Member] | Maximum [Member]                      
Borrowings [Line Items]                      
Carrying amount 57,900,000   58,100,000         57,900,000   57,900,000  
7.25% 2030 Notes [Member]                      
Borrowings [Line Items]                      
Aggregate principal amount         $ 50,000,000            
Net proceeds amount         $ 48,800,000            
Fixed interest, description         Interest on the 7.25% 2030 Notes is paid semi-annually in arrears on May 1 and November 1, at a rate of 7.25% per year            
Financing costs         $ 900,000            
Outstanding borrowings               50,000,000   50,000,000  
Amortization of deferred financing               100,000   200,000  
Offering price rate         99.117%            
Placement agent fee and estimated offering expenses         $ 800,000            
Integral multiples of excess 1,000             1,000   1,000  
Interest expense               900,000   1,800,000  
7.25% 2030 Notes [Member] | Minimum [Member]                      
Borrowings [Line Items]                      
Outstanding borrowings                   50,000,000  
Carrying amount     50,000,000                
7.25% 2030 Notes [Member] | Maximum [Member]                      
Borrowings [Line Items]                      
Outstanding borrowings                   48,400,000  
Carrying amount     49,600,000                
Seven Point Five Zero Two Thousand Thirty One [Member]                      
Borrowings [Line Items]                      
Aggregate principal amount       $ 100,000,000              
Net proceeds amount       96,400,000              
Deducting underwriting commissions amount       $ 3,100,000              
Fixed interest, description       Interest on the 7.50% 2031 Notes is paid quarterly in arrears on February 28, May 31, August 31 and November 30, at a rate of 7.50% per year, commencing May 31, 2026.              
Financing costs     3,600,000                
Outstanding borrowings               100,000,000   100,000,000  
Amortization of deferred financing               200,000   400,000  
Interest expense               1,900,000   $ 3,800,000  
Offering costs       $ 500,000              
Trading symbol per share (in Dollars per share)                   $ 25  
Seven Point Five Zero Two Thousand Thirty One [Member] | Minimum [Member]                      
Borrowings [Line Items]                      
Carrying amount 98,600,000   100,000,000         98,600,000   $ 98,600,000  
Seven Point Five Zero Two Thousand Thirty One [Member] | Maximum [Member]                      
Borrowings [Line Items]                      
Carrying amount 100,000,000   $ 101,700,000         100,000,000   100,000,000  
8.00% 2031 Notes [Member]                      
Borrowings [Line Items]                      
Aggregate principal amount   $ 85,000,000                  
Principal amount, percentage   8.00%                  
Net proceeds amount   $ 82,300,000                  
Deducting underwriting commissions amount   $ 2,700,000                  
Fixed interest, description   Interest on the 8.00% 2031 Notes is paid quarterly in arrears on February 28, May 31, August 31, and November 30, at a rate of 8.00% per year, commencing November 30, 2026.                  
Financing costs   $ 2,900,000                  
Outstanding borrowings                   85,000,000  
Amortization of deferred financing               10,000.00   10,000.00  
Interest expense               100,000   100,000  
8.00% 2031 Notes [Member] | Minimum [Member]                      
Borrowings [Line Items]                      
Outstanding borrowings                   2,800,000  
Carrying amount 84,300,000             84,300,000   84,300,000  
8.00% 2031 Notes [Member] | Maximum [Member]                      
Borrowings [Line Items]                      
Outstanding borrowings               5,500,000      
Carrying amount $ 85,000,000             $ 85,000,000   $ 85,000,000