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Stockholders' Equity - Additional Information (Detail) - USD ($)			3 Months Ended				6 Months Ended
	Jul. 27, 2020	Jul. 25, 2011	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Stockholders Equity [Line Items]
Common stock, value of shares authorized to repurchase		$ 200,000,000
Stock repurchase, shares		2,588,000	0		0		0	0
Value of shares repurchased		$ 127,000,000
Cash dividends per common share			$ 0.20	$ 0.20	$ 0.20	$ 0.20
Dividend payment to common shareholders							$ 22,000,000.0	$ 21,700,000
Subsequent Event [Member]
Stockholders Equity [Line Items]
Dividend declared date	Jul. 27, 2020
Cash dividend to be paid	$ 0.20
Dividend to be paid date	Sep. 04, 2020
Dividend declared, shareholders of record date	Aug. 24, 2020

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Aggregate dividends paid during the period for each share of common stock outstanding.

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