Stock Options and Incentive Plans - Restricted Stock Options Activity (Details) - $ / shares	6 Months Ended	9 Months Ended	49 Months Ended
	Oct. 31, 2025	Jan. 31, 2025	Apr. 30, 2023
Number of Shares
Outstanding beginning of the period (in shares)			8,532,491
Forfeited (in shares)	(5,780)	0	(2,500,000)
Outstanding end of the period (in shares)	6,026,711
Vested (in shares)	5,868,418
Nonvested, (in shares)	158,293
Weighted Average Grant Date Fair Value
Outstanding beginning of the period (in dollars per share)			$ 0.46
Forfeited (in dollars per share)	$ 1.73	$ 0	$ 0.40
Outstanding end of the period (in dollars per share)	0.49
Vested (in dollars per share)	0.47
Nonvested (in dollars per share)	$ 0.43