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BANK CREDIT ARRANGEMENTS (Details) - USD ($)
Dec. 29, 2018
Dec. 30, 2017
Bank Credit Arrangements    
Outstanding amount $ 10,678,000 $ 161,000
Short-term borrowings    
Bank Credit Arrangements    
Total line of credit facility for short-term borrowings 137,679  
Outstanding amount 10,678,000 $ 161,000
Unused and available borrowings $ 127,001,000  
Weighted average interest rate on short-term borrowings (as a percent) 1.37%