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Lessee ROU Assets and Lease Liabilities Lease, Cost (Details) - USD ($)
3 Months Ended
Mar. 28, 2020
Mar. 30, 2019
Leases [Abstract]    
Operating lease costs $ 1,658,000 $ 1,765,000
Short-term lease costs 0 9,000
Sublease income 0 (52,000)
Total lease costs $ 1,658,000 $ 1,722,000