Industry Segment and Geographic Area Information Schedule of Long-Lived Assets by Geographic Location (Details) - USD ($) $ in Thousands	Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018
Long-lived assets by Geographic Area [Line Items]
Total net long-lived assets	$ 651,158	$ 659,605	$ 490,311
UNITED STATES
Long-lived assets by Geographic Area [Line Items]
Total net long-lived assets	197,755	269,183	201,649
GERMANY
Long-lived assets by Geographic Area [Line Items]
Total net long-lived assets	149,105	119,612	99,181
CHINA
Long-lived assets by Geographic Area [Line Items]
Total net long-lived assets	75,199	71,216	61,261
FINLAND
Long-lived assets by Geographic Area [Line Items]
Total net long-lived assets	60,559	29,052	16,211
UNITED KINGDOM
Long-lived assets by Geographic Area [Line Items]
Total net long-lived assets	35,243	51,659	33,429
SINGAPORE
Long-lived assets by Geographic Area [Line Items]
Total net long-lived assets	24,291	23,063	14,942
INDIA
Long-lived assets by Geographic Area [Line Items]
Total net long-lived assets	21,975	19,691	14,636
ITALY
Long-lived assets by Geographic Area [Line Items]
Total net long-lived assets	17,051	14,152	11,324
FRANCE
Long-lived assets by Geographic Area [Line Items]
Total net long-lived assets	13,325	12,940	3,210
BRAZIL
Long-lived assets by Geographic Area [Line Items]
Total net long-lived assets	8,627	9,126	8,237
POLAND
Long-lived assets by Geographic Area [Line Items]
Total net long-lived assets	7,732	7,216	3,212
Other International [Member]
Long-lived assets by Geographic Area [Line Items]
Total net long-lived assets	34,625	26,210	17,565
Total international [Member]
Long-lived assets by Geographic Area [Line Items]
Total net long-lived assets	453,403	390,422	288,662
CANADA
Long-lived assets by Geographic Area [Line Items]
Total net long-lived assets	$ 5,671	$ 6,485	$ 5,454