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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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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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Amount of cash inflow from exercise of option under share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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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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Number of shares authorized for issuance under share-based payment arrangement.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Intrinsic value of vested award under share-based payment arrangement. Excludes share and unit options.

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Amount of stock repurchase plan authorized.

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Expiration date for the purchase of an entity's own shares under a stock repurchase plan, in the YYYY-MM-DD format.

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Stockholders' Equity - Additional Information (Detail) - USD ($)		1 Months Ended	12 Months Ended
	Oct. 19, 2016	Oct. 31, 2018	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Oct. 01, 2018	Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized (in shares)			120,000,000	120,000,000		120,000,000	90,000,000
Common stock, shares issued (in shares)			64,923,539	64,676,567
Common stock, shares outstanding (in shares)			64,923,539	64,676,567
Preferred Stock, shares authorized (in shares)			10,000,000
Preferred Stock, shares issued (in shares)			0	0	0
Preferred Stock, shares outstanding (in shares)			0	0	0
Compensation expense			$ 15,700,000	$ 13,200,000	$ 13,600,000
Remaining compensation cost yet to be recognized			$ 19,800,000
Remaining compensation cost yet to be recognized , period			3 years
Intrinsic value of options exercised			$ 2,500,000
Cash proceeds from exercise of stock options			2,200,000
Stock repurchase program, expiration period	Dec. 31, 2019
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchase program, authorized amount	$ 30,000,000.0
Restricted Stock [Member] \| A&S Business [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock issued		536,030
Aggregate fair value of awards		$ 21,000,000.0
Fair value attributed to preacquisition savings		$ 3,100,000
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate fair value of awards			8,500,000
Total intrinsic value			13,000,000.0
Performance Share Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate fair value of awards			1,300,000
Total intrinsic value			$ 1,600,000
Period for measuring performance objective			3 years
2014 Plan [Member] \| Restricted Shares and Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares for vesting period			5 years
2014 Plan [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock available for delivery pursuant to the grant of awards (in shares)			4,100,000