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Quarterly report pursuant to Section 13 or 15(d)

Revenue - Narrative (Details)

v3.23.1
Revenue - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended
Jan. 31, 2023
Jan. 31, 2022
Jan. 31, 2023
Jan. 31, 2022
Apr. 30, 2022
Disaggregation of Revenue [Line Items] Ìý Ìý Ìý Ìý Ìý
Deferred revenue $ 8,075,063 Ìý $ 8,075,063 Ìý $ 5,889,911
Recognition of deferred revenue Ìý Ìý 5,122,057 Ìý Ìý
Long-term deferred revenue $ 0 Ìý $ 0 Ìý Ìý
Revenue Benchmark | Customer Concentration Risk | Pre-Licensure Nursing Program Ìý Ìý Ìý Ìý Ìý
Disaggregation of Revenue [Line Items] Ìý Ìý Ìý Ìý Ìý
Revenue (as percent) 19.00% 24.00% 22.00% 23.00% Ìý
Revenue Benchmark | Customer Concentration Risk | Non-US Ìý Ìý Ìý Ìý Ìý
Disaggregation of Revenue [Line Items] Ìý Ìý Ìý Ìý Ìý
Revenue (as percent) 2.00% 2.00% 2.00% 2.00% Ìý