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BANK CREDIT ARRANGEMENTS (Details) - USD ($) | Dec. 26, 2020 | Dec. 28, 2019
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Bank Credit Arrangements |  |
Outstanding amount | $ 35,147,000 | $ 21,774,000
Short-term borrowings |  |
Bank Credit Arrangements |  |
Total line of credit facility for short-term borrowings | 144,690,000 |
Outstanding amount | $ 35,147,000 | $ 21,774,000
Weighted average interest rate on short-term borrowings | 4.65% |
Unused and available borrowings | $ 109,673,000 |

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