Note 12 - Lease Commitments (Details Textual) |
3 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
|
Jul. 31, 2026
USD ($)
|
Nov. 30, 2016
USD ($)
ft²
|
Jul. 31, 2026
USD ($)
|
Apr. 30, 2026
USD ($)
|
May 01, 2019
USD ($)
|
|
| Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Property and equipment, net | Property and equipment, net | Property and equipment, net | Property and equipment, net | |
| Operating Lease, Right-of-Use Asset | $ 1,628,000 | $ 1,628,000 | $ 1,918,000 | $ 9,575,000 | |
| Operating Lease, Liability | 1,933,000 | 1,933,000 | 10,340,000 | ||
| Lease Incentive Receivable 1 | $ 765,000 | ||||
| Operating Lease, Expense | $ 319,000 | $ 319,000 | |||
| Operating Lease, Payments | $ 370,000 | ||||
| Sublease to American Building Maintenance Industries, Incorporated [Member] | |||||
| Area of Real Estate Property (Square Foot) | ft² | 24,726 | ||||
| Operating Leases, Annual Base Rent | $ 1,126,000 | ||||
| Base Rent Increase, Percent | 2.25% |