Significant Accounting Policies - Revenue Recognition (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 25, 2020	Dec. 27, 2019
Disaggregation of Revenue [Line Items]
Deferred revenue	$ 33,385	$ 30,466	$ 23,820
Sales return allowance and rebates	9,275	7,403
Marketing Incentive Program
Disaggregation of Revenue [Line Items]
Deferred revenue	768	1,508
Cost of sales	$ 1,245	$ 1,672