Summary of Significant Accounting Policies - Customer Loyalty Program (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 28, 2020	Mar. 30, 2019	Mar. 31, 2018
Customer Loyalty Program
Reserve for Returns	$ 10,211	$ 10,211
Reconciliation of Activity in Program
Beginning balance	10,211
Ending balance	$ 11,112	10,211
Customer Loyalty Program
Customer Loyalty Program
Number of days in which customers must make a qualifying purchase in order to maintain an active point balance	365 days
Number of days from award grant date in which the customer has to make a qualifying purchase to redeem the awards	60 days
Reserve for Returns	$ 1,936	1,936	$ 2,060
Reconciliation of Activity in Program
Beginning balance	1,936	1,705	2,060
Provisions	6,468	5,433	4,877
Current year redemptions	(6,328)	(5,202)	(5,232)
Ending balance	$ 2,076	$ 1,936	$ 1,705