Summary of Significant Accounting Policies - Customer Loyalty Program (Details) - Customer Loyalty Program - USD ($) $ in Thousands	3 Months Ended
	Jun. 27, 2020	Jun. 29, 2019
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	$ 1,758	$ 2,026
Reconciliation of Activity in Program
Beginning balance	2,076	1,936
Year-to-date provisions	341	1,468
Year-to-date redemptions	(659)	(1,378)
Ending balance	$ 1,758	$ 2,026