Stockholders Equity [Line Items]

No definition available.

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- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

+ References

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
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- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

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- Definition

Amount remaining of a stock repurchase plan authorized.

+ References

No definition available.

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- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

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- Definition

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

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- Definition

Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

+ References

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- Definition

The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.

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Stockholders' (Deficit) Equity - Additional Information (Detail) - USD ($)		12 Months Ended
	May 27, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Aug. 02, 2019	Dec. 31, 2017
Stockholders Equity [Line Items]
Common stock, shares issued		94,652,248	94,044,203
Treasury stock, shares		16,260,248	15,790,463
Treasury stock at cost		$ 415,309,000	$ 402,903,000
Share Repurchase Program [Member]
Stockholders Equity [Line Items]
Share Repurchase Program, authorized amount		$ 250,000,000.0			$ 250,000,000.0
Stock Repurchase Program, number of shares repurchased	5,615,874	469,785	5,615,874	3,654,816
Stock repurchases under Share Repurchase Program	$ 150,000,000.0	$ 12,400,000	$ 150,000,000.0	$ 98,000,000.0
Share Repurchase Program, remaining authorized repurchase amount		$ 237,600,000
Common Stock [Member]
Stockholders Equity [Line Items]
Common stock, shares issued		94,652,248	94,044,203	93,400,929		92,637,403
Number of unvested shares		101,135
Restricted Stock Units [Member]
Stockholders Equity [Line Items]
Number of unvested shares		3,082,378