Accrued Expenses (Details) - USD ($) $ in Thousands	Mar. 28, 2020	Dec. 28, 2019
Accounts Payable, Current [Abstract]
Accrued other compensation	$ 16,232	$ 13,331
Accrued warranty	13,998	13,856
Accrued bonus	3,820	12,541
Current portion of operating lease liabilities	6,950	6,843
Accrued direct fulfillment costs	3,536	10,582
Accrued sales and other indirect taxes payable	2,460	12,440
Accrued federal and state income taxes	1,722	3,378
Accrued other	7,083	8,797
Accrued expenses	$ 55,801	$ 81,768