Note D - Property and Equipment - Property and Equipment (Details) - USD ($) $ in Thousands |
Apr. 30, 2019 |
Apr. 30, 2018 |
|---|---|---|
| Accumulated depreciation and amortization | $ (31,585) | $ (28,077) |
| Property and equipment, net | 28,537 | 28,594 |
| Land [Member] | ||
| Property and equipment | 7,413 | 6,402 |
| Building and Building Improvements [Member] | ||
| Property and equipment | 11,815 | 11,569 |
| Furniture, Fixtures and Equipment [Member] | ||
| Property and equipment | 13,307 | 12,874 |
| Leasehold Improvements [Member] | ||
| Property and equipment | 26,064 | 24,567 |
| Construction in Progress [Member] | ||
| Property and equipment | $ 1,523 | $ 1,259 |