Leases - Schedule of Operating and Finance Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 25, 2019	Jun. 25, 2019
Leases [Abstract]
Operating lease cost	$ 8,955	$ 17,704
Amortization of leased assets	194	388
Interest on lease liabilities	230	435
Net lease cost	9,379	18,527
Short-term lease costs	200	500
Variable lease costs	$ 900	$ 1,800