Fair Value (Details) - USD ($)	Mar. 31, 2024	Mar. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior unsecured notes payable, net	$ 272,609,632	$ 287,352,892
Senior notes payable	223,419,132	307,910,824
Fair Value, Inputs, Level 1 | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	11,839,460	16,508,935
Fair Value, Inputs, Level 1 | Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	11,839,460	16,508,935
Fair Value, Inputs, Level 2 | Carrying Value | Senior notes payable
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior unsecured notes payable, net	275,000,000	290,860,000
Fair Value, Inputs, Level 2 | Estimated Fair Value | Senior notes payable
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior unsecured notes payable, net	256,437,500	218,127,548
Fair Value, Inputs, Level 3 | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans receivable, net	847,440,309	887,788,486
Fair Value, Inputs, Level 3 | Carrying Value | Senior notes payable
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior notes payable	223,419,132	307,910,824
Fair Value, Inputs, Level 3 | Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans receivable, net	847,440,309	887,788,486
Fair Value, Inputs, Level 3 | Estimated Fair Value | Senior notes payable
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior notes payable	$ 223,419,132	$ 307,910,824