Stock-Based Compensation - Stock Options By Grant Date (Details) - $ / shares	9 Months Ended	12 Months Ended
	Dec. 27, 2020	Mar. 29, 2020	Mar. 31, 2019	Apr. 01, 2018	Mar. 26, 2017	Mar. 27, 2016
Outstanding options
Options Granted (in shares)	225,000
Options Outstanding (in shares)	942,458
Options Exercisable (in shares)	512,397
Grant Fiscal Year 2021
Outstanding options
Options Granted (in shares)	225,000
Option Exercise Price (in dollars per share)	$ 4.52
Options Outstanding (in shares)	182,500
Grant Fiscal Year 2020
Outstanding options
Options Granted (in shares)		405,000
Option Exercise Price (in dollars per share)		$ 13.54
Options Outstanding (in shares)	341,000
Options Exercisable (in shares)	117,084
Grant Fiscal Year 2019
Outstanding options
Options Granted (in shares)			66,500
Option Exercise Price (in dollars per share)			$ 16.31
Options Outstanding (in shares)	35,000
Options Exercisable (in shares)	21,561
Grant Fiscal Year 2018
Outstanding options
Options Granted (in shares)				230,000
Option Exercise Price (in dollars per share)				$ 15.12
Options Outstanding (in shares)	80,000
Options Exercisable (in shares)	69,791
Grant Fiscal Year 2017
Outstanding options
Options Granted (in shares)					410,000
Option Exercise Price (in dollars per share)					$ 12.57
Options Outstanding (in shares)	263,958
Options Exercisable (in shares)	263,961
Grant Fiscal Year 2016
Outstanding options
Options Granted (in shares)						100,000
Option Exercise Price (in dollars per share)						$ 22.42
Options Outstanding (in shares)	40,000
Options Exercisable (in shares)	40,000