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Note K - Shareholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 25, 2018 | Mar. 29, 2019 | Jun. 30, 2019 | Jun. 30, 2018
Stock Issued During Period, Shares, New Issues | 1,533,334 |  |  |
Share Price | $ 22.50 |  |  |
Payments of Stock Underwriting Costs |  | $ 2,070 |  |
Payments of Stock Offering Expenses |  | 220 |  |
Proceeds from Issuance of Common Stock |  | $ 32,210 | $ 32,210 |
Common Stock, Shares, Outstanding, Ending Balance |  |  | 13,240,278 | 11,553,685
Treasury Stock, Shares, Ending Balance |  |  | 1,392,524 | 1,545,783
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture, Total |  |  | 157,043 | 67,286
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period |  |  | 3,784 | 32,734
Treasury Stock, Shares, Acquired |  |  | 0 | 0
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased |  |  | 315,000 | 315,000
Common Stock, Dividends, Per Share, Cash Paid |  |  | $ 0 | $ 0
Preferred Stock, Shares Authorized |  |  | 200,000 | 200,000
Preferred Stock, Shares Issued, Total |  |  | 0 | 0
Preferred Stock, Capital Shares Reserved for Future Issuance |  |  | 150,000 |

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