Face amount per share of no-par value common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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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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The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Stockholders' Equity - Additional Information (Detail)		3 Months Ended
Stockholders' Equity - Additional Information (Detail)	May 02, 2018 shares	Mar. 31, 2019 $ / shares shares	Dec. 31, 2018 shares	Feb. 16, 2018 shares
Equity, Class of Treasury Stock [Line Items]
Common stock, par value \| $ / shares		$ 0.01
Common stock, shares authorized	80,000,000	120,000,000	120,000,000
Stock split	0
Stock Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Common stock repurchase program, authorized shares				5,800,000
Number of shares repurchased by the Company		584,310