Revenue and Geographic Information - Changes in Deferred Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 25, 2020
Change In Contract With Customer Liability [Roll Forward]
Deferred revenue – beginning of period	$ 30,466	$ 23,820
Amounts billed, but not recognized	28,536	28,366
Recognition of revenue	(27,086)	(21,720)
Deferred revenue acquired	1,469	0
Deferred revenue – end of period	$ 33,385	$ 30,466