Treasury Stock - Additional Information (Detail) - USD ($)	Mar. 29, 2019	Jan. 31, 2019	Oct. 19, 2016
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount		$ 75,000,000	$ 35,000,000
Remaining authorized amount for repurchase of common stock	$ 92,462,000

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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