Debt (Debt Issuance Costs) (Detail) $ in Thousands	Sep. 30, 2020 USD ($)
Deferred Debt Issuance Costs at June 30, 2020	$ 6,401
Amortization of Deferred Debt Issuance Costs	(392)
Deferred debt issuance costs as of September 30, 2020	6,009
Term B Loan [Member]
Deferred Debt Issuance Costs at June 30, 2020	4,885
Amortization of Deferred Debt Issuance Costs	(256)
Deferred debt issuance costs as of September 30, 2020	4,629
Revolver [Member]
Deferred Debt Issuance Costs at June 30, 2020	1,516
Amortization of Deferred Debt Issuance Costs	(136)
Deferred debt issuance costs as of September 30, 2020	$ 1,380