Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 29, 2018	Dec. 30, 2017
Components of accrued expenses
Accrued bonus	$ 21,226	$ 20,443
Accrued warranty	11,964	11,264
Accrued other compensation	10,518	9,071
Accrued sales and other taxes	11,397	7,256
Accrued federal and state income taxes	1,936	7,110
Accrued direct fulfillment costs	5,372	1,885
Accrued accounting fees	2,052	1,221
Accrued other	6,794	15,397
Accrued expenses, total	$ 71,259	$ 73,647