XML 31 R68.htm IDEA: XBRL DOCUMENT v3.19.3
Leases - Components of Lease Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 27, 2019
Sep. 28, 2018
Sep. 27, 2019
Sep. 28, 2018
Leases [Abstract]        
Operating lease cost $ 692 $ 1,614 $ 1,768 $ 3,587
Variable lease cost 274 363 654 1,366
Total lease costs $ 966 $ 1,977 $ 2,422 $ 4,953