Quarterly report [Sections 13 or 15(d)]

Long-Term Debt and Lines of Credit - Narrative (Details)

v3.26.1
Long-Term Debt and Lines of Credit - Narrative (Details)
 3 Months Ended 6 Months Ended
Sep. 17, 2024
USD ($)
Mar. 31, 2026
USD ($)
a
Mar. 31, 2026
USD ($)
a
Sep. 30, 2025
USD ($)
Debt Instrument [Line Items]        
Cash and cash equivalents in an amount equal   150.00%    
Debt instrument covenant minimum liquidity, amount   $ 5,824,000 $ 5,824,000  
Debt instrument covenant loan to value cap ratio   50.00% 50.00%  
Grove Management Services        
Debt Instrument [Line Items]        
Area of land (in acres) | a   40,263 40,263  
RLOC        
Debt Instrument [Line Items]        
Revolving line of credit $ 95,000,000      
Basis points 2.20%   0.25%  
Variable interest rate 5.00%      
Line of credit facility, minimum balance $ 2,500,000      
LIBOR spread subject to adjustment period     2 years  
Outstanding standby letters of credit   $ 92,500,000 $ 92,500,000 $ 92,500,000
RLOC | Variable Rate Term Loan        
Debt Instrument [Line Items]        
Variable interest rate   5.88% 5.88% 6.56%
Metlife Term Loan | Citree        
Debt Instrument [Line Items]        
Revolving line of credit   $ 5,000,000 $ 5,000,000  
Area of property that served as collateral (in acres) | a   1,200 1,200  
Interest rate   5.28% 5.28%