Schedule of Revenue by End Market (Details)	3 Months Ended		6 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018
Segment Reporting Information [Line Items]
Total revenue by end market	100.00%	100.00%	100.00%	100.00%
Advanced Industrial
Segment Reporting Information [Line Items]
Total revenue by end market	45.00%	50.00%	45.00%	50.00%
Medical
Segment Reporting Information [Line Items]
Total revenue by end market	55.00%	50.00%	55.00%	50.00%