Stock-Based Compensation - Schedule of Supplemental Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value per share granted (in USD per share)	$ 8.88	$ 7.68	$ 6.25
Total intrinsic value of options exercised (in thousands)	$ 17,674	$ 27,759	$ 44,405
Total fair value of options vested (in thousands)	$ 2,593	$ 4,142	$ 5,566
Restricted stock units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value per unit granted (In USD per share)	$ 28.89	$ 26.89	$ 18.39
Total intrinsic value of units vested (in thousands)	$ 10,679	$ 16,452	$ 14,642
Total fair value of units vested (in thousands)	$ 6,368	$ 6,069	$ 6,469

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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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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-Publisher FASB
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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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-Publisher FASB
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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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