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Leases - Leases Recorded on the Balance Sheet (Details) - USD ($)
$ in Thousands
Mar. 28, 2020
Dec. 31, 2019
Leases [Abstract]    
Operating lease right of use asset $ 8,143 $ 8,691
Operating lease - current 2,628 2,827
Operating lease - non-current $ 5,333 $ 5,811