Subsequent Events - Additional Information (Detail) - Subsequent Event - USD ($) $ in Millions	Nov. 12, 2019	Oct. 25, 2019
Subsequent Event [Line Items]
Proposed litigation settlement amount		$ 5.5
Carter Parties Settlement
Subsequent Event [Line Items]
Settlement amount realized from exchange of intellectual property assets and membership interests	$ 15.0
Selling, General and Administrative Expenses
Subsequent Event [Line Items]
Proposed litigation settlement amount		$ 5.5