Subsequent Event (Detail) - Subsequent Event [Member] - Senior Secured Term Loan Facility [Member] - USD ($) $ in Millions	May 03, 2021	May 02, 2021
Subsequent Event [Line Items]
Line of credit facility, commitment amount	$ 132.5	$ 160.0
Commitment Maturing May 23, 2022 [Member]
Subsequent Event [Line Items]
Line of credit facility, commitment amount	25.0
Commitments Maturing October 31, 2023 [Member]
Subsequent Event [Line Items]
Line of credit facility, commitment amount	$ 107.5
Maximum [Member]
Subsequent Event [Line Items]
Annual commitment fee	0.625%
Net leverage ratio	4.50%
Minimum [Member]
Subsequent Event [Line Items]
Annual commitment fee	0.375%
Net leverage ratio	1.00%