| Significant Accounting Policies - Narrative (Details) | 6 Months Ended | ||||||
|---|---|---|---|---|---|---|---|
| Dec. 15, 2022  USD ($) | Oct. 31, 2022  USD ($)  segment | Oct. 31, 2021  USD ($) | Oct. 30, 2022  USD ($) | Aug. 31, 2022  USD ($) | Apr. 30, 2022  USD ($) | Dec. 31, 2020  USD ($) | |
| Accounting Policies [Abstract] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 
| Cash, uninsured amount | Ìý | $ 3,413,596 | Ìý | Ìý | Ìý | $ 7,749,715 | Ìý | 
| Number of reportable segments | segment | Ìý | 1 | Ìý | Ìý | Ìý | Ìý | Ìý | 
| Tenant improvements allowance received | Ìý | $ 418,280 | $ 816,591 | Ìý | Ìý | Ìý | Ìý | 
| Short-term Debt [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 
| Restricted cash | Ìý | 6,423,525 | $ 1,433,397 | Ìý | Ìý | 6,433,397 | Ìý | 
| Collateral Pledged, State of Arizona | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 
| Short-term Debt [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 
| Restricted cash | Ìý | 5,000,000 | Ìý | Ìý | Ìý | 5,000,000 | Ìý | 
| Collateral Pledged, State of Arizona | Surety Bond | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 
| Short-term Debt [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 
| Cash collateral for borrowed securities | Ìý | 5,500,000 | Ìý | $ 18,300,000 | Ìý | 18,300,000 | Ìý | 
| Collateral Pledged, State of Arizona | Surety Bond | Subsequent Event | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 
| Short-term Debt [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 
| Amount of restricted cash moved to unrestricted | $ 1,500,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 
| Collateral Pledged, Aspen University Letter of Credit | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 
| Short-term Debt [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 
| Restricted cash | Ìý | 1,173,525 | Ìý | Ìý | Ìý | 1,173,525 | Ìý | 
| Secured Credit Line | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 
| Short-term Debt [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 
| Restricted cash | Ìý | $ 250,000 | Ìý | Ìý | Ìý | $ 250,000 | Ìý | 
| Collateral Pledged, Bank Letter of Credit | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 
| Short-term Debt [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 
| Restricted cash | Ìý | Ìý | Ìý | Ìý | $ 9,872 | Ìý | $ 369,473 |