Other Assets - Current (Parenthetical) (Detail) $ in Thousands	Sep. 30, 2019 USD ($)
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Insurance receivable	$ 15,000	[1]

[1] As of September 30, 2019, the Company recorded an asset of approximately $15.0 million related to insurance claims that the Company believes are probable of recovery from various insurance carriers. These claims pertain to expenses incurred related to certain litigation claims against the Company and related expenses that are discussed throughout Note 11.