Leases - Additional information (Details) - Lease	9 Months Ended
	Sep. 29, 2019	Dec. 31, 2018
Leases [Line Items]
Number of real estate leases at the point of adoption of the standard		30
Number of additional operating leases entered	2
Number of equipment lease entered	1
Non-cancelable lease term	less than one year
Minimum
Leases [Line Items]
Term of leases	15 years
Rent renewal options	1 year
Maximum
Leases [Line Items]
Term of leases	20 years
Rent renewal options	5 years