Revenue Recognition (Tables)

6 Months Ended

Jun. 25, 2021

Revenue From Contract With Customer [Abstract]

Revenue by Geographic Area

The following table sets forth revenue by geographic area (in millions):

	Three Months Ended				Six Months Ended
	June 25,		June 26,		June 25,		June 26,
	2021		2020		2021		2020
United States	$	187.3	$	155.1	$	359.9	$	297.7
Singapore		182.5		119.6		335.8		231.8
South Korea		36.7		21.3		63.3		41.6
China		25.4		12.0		41.4		21.1
Taiwan		23.1		15.0		43.3		30.2
Austria		20.6		13.0		39.3		27.5
Israel		5.4		4.2		9.4		7.9
Other		34.2		4.6		40.4		7.9
	$	515.2	$	344.8	$	932.8	$	665.7