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Note 11 - Treasury Stock and Repurchase Program (Tables) | 3 Months Ended
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Jul. 31, 2019
Notes Tables |
Class of Treasury Stock [Table Text Block] |
(in thousands except for shares and cost per share) |  | Shares |  |  | Total Average Cost Assigned |  |  | Average Cost per Share |  |  | Aggregate Purchase Price Remaining Under the Program |
Balance as of April 30, 2019 (1), (2), (3) |  |  | 336,439 |  |  | $ | 4,743 |  |  | $ | 14.10 |  |  | $ | 1,438 |
Purchases effected in open market during the quarters ended (2): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
May 31, 2019 |  |  | 2,409 |  |  |  | 56 |  |  |  | 23.21 |  |  |  | 1,382 |
June 30, 2019 |  |  | 1,448 |  |  |  | 36 |  |  |  | 24.98 |  |  |  | 1,346 |
July 31, 2019 |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 1,346 |
Balance as of July 31, 2019 (2) (3) |  |  | 340,296 |  |  | $ | 4,835 |  |  | $ | 14.21 |  |  | $ | 1,346 |

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