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Note 12 - Treasury Stock Transactions (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jun. 02, 2020 | Jun. 27, 2020 | Jun. 27, 2020 | Jun. 29, 2019
Treasury Stock, Shares, Acquired (in shares) | 1,858,139 |  |  |
Treasury Stock Acquired, Average Cost Per Share (in dollars per share) | $ 1.20 |  |  |
Treasury Stock, Value, Acquired, Cost Method | $ 2,200 | $ 2,230 |  |
Notes Issued |  |  | $ 2,230 |
Stock Repurchase Program, 2016 [Member] |  |  |  |
Treasury Stock, Shares, Acquired (in shares) |  |  |  | 0
Note Issued to Acquire Treasury Stock [Member] |  |  |  |
Notes Issued | $ 2,200 |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 9.00% |  |  |
Debt Instrument, Maturity Date | Aug. 10, 2023 |  |  |

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