Other Expense - Additional Information (Detail) $ in Millions |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Sep. 29, 2018
USD ($)
|
Sep. 30, 2017
USD ($)
|
Sep. 29, 2018
USD ($)
Offering
|
Sep. 30, 2017
USD ($)
|
|
Other Income And Expenses [Line Items] | ||||
Legal, accounting and advisory services | $ 0.5 | $ 0.8 | $ 6.9 | $ 0.8 |
Number of public offerings | Offering | 2 | |||
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 | $ 0.8 |