Leases - Narrative (Details)	3 Months Ended
	Mar. 30, 2019
Lessee, Lease, Description [Line Items]
Lease, remaining term (years)	15 years
Lease, option to extend, term (years)	5 years
China and Canada
Lessee, Lease, Description [Line Items]
Lease, option to extend, term (years)	10 years