Other Expense - Additional Information (Detail) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 29, 2018 USD ($)	Dec. 30, 2017 USD ($)	Dec. 29, 2018 USD ($) Offering	Dec. 30, 2017 USD ($)
Other Income And Expenses [Line Items]
Insured loss at retail sales center	$ 0.1
Legal, accounting and advisory services		$ 2.0	$ 6.9	$ 2.8
Number of public offerings | Offering			3
Expenses related to prior acquisition and disposition of former business unit				$ 0.1
Public Offerings [Member]
Other Income And Expenses [Line Items]
Legal, accounting and advisory services			$ 0.8