| Leases (Tables)
 | 3 Months Ended | 
| Jul. 31, 2021 | 
|---|
| Leases [Abstract] | Ìý | 
| Schedule of Right-of-Use Assets and Operating Lease Liabilities | 
ROU assets are summarized below:
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
|  |  | July 31, 2021 |  | April 30, 2021 |  
| ROU assets - Operating facility leases |  | $ | 14,308,296Ìý |  |  | $ | 14,308,296Ìý |  |  
| Less: accumulated reduction |  | (2,065,840) |  |  | (1,593,433) |  |  
| Total ROU assets |  | $ | 12,242,456Ìý |  |  | $ | 12,714,863Ìý |  |  
 
Operating lease obligations, related to the ROU assets are summarized below:
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
|  |  | July 31, 2021 |  | April 30, 2021 |  
| Total lease liabilities |  | $ | 19,946,229Ìý |  |  | $ | 19,946,229Ìý |  |  
| Reduction of lease liabilities |  | (1,995,109) |  |  | (1,617,600) |  |  
| Total operating lease obligations |  | $ | 17,951,120Ìý |  |  | $ | 18,328,629Ìý |  |  | 
| Future Minimum Payments Under Operating Leases | 
The following is a schedule by fiscal years of future minimum lease payments required under operating leases that have initial or remaining non-cancelable lease terms in excess of one year as of JulyÌý31, 2021 (a) (by fiscal year) .
 
(a)  Lease payments exclude $3.5 million of legally binding minimum lease payments for the new BSN Pre-Licensure campus location in Nashville, Tennessee lease signed but not yet commenced.
_____________________
|  |  |  |  |  |  |  |  |  |  
| Maturity of Lease Obligations |  | Lease Payments |  
| 2022 (remaining) |  | $ | 3,076,200Ìý |  |  
| 2023 |  | 3,647,737Ìý |  |  
| 2024 |  | 3,514,179Ìý |  |  
| 2025 |  | 3,288,066Ìý |  |  
| 2026 |  | 3,383,530Ìý |  |  
| Thereafter |  | 10,417,592Ìý |  |  
| Total future minimum lease payments |  | 27,327,304Ìý |  |  
| ÌýÌýÌýÌýLess: imputed interest |  | (9,376,184) |  |  
| Present value of operating lease liabilities |  | $ | 17,951,120Ìý |  |  | 
| Schedule of Balance Sheet Information Related to Leases | 
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
| Balance Sheet Classification |  | July 31, 2021 |  | April 30, 2021 |  
| Operating lease obligations, current portion |  | $ | 2,086,076Ìý |  |  | $ | 2,029,821Ìý |  |  
| Operating lease obligations, less current portion |  | 15,865,044Ìý |  |  | 16,298,808Ìý |  |  
| Total operating lease liabilities |  | $ | 17,951,120Ìý |  |  | $ | 18,328,629Ìý |  |  | 
| Schedule of Other Information Related to Leases | 
|  |  |  |  |  |  |  |  |  |  
| Other Information |  | July 31, 2021 |  
| Weighted average remaining lease term (in years) |  | 7.29 |  
| Weighted average discount rate |  | 12Ìý | % |  |