The general percentage for which stock options may vest.

No definition available.

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- Definition

The period for which stock options may be granted (for example, years, months).

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No definition available.

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- Definition

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount of noncash expense for share-based payment arrangement.

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- Definition

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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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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No definition available.

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- Definition

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

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

Percentage of vesting of award under share-based payment arrangement.

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Amount of expense for penalties related to a tax position claimed or expected to be claimed in the tax return.

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- Definition

Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

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Equity-Based Compensation - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized common stock	8,200,000		8,200,000
Annual increments in employee grants			25.00%
Equity incentive plan available for future grant	2,855,613		2,855,613
Stock options, contractual term			10 years
Equity-based compensation expense	$ 4,182,000	$ 7,129,000	$ 10,283,000	$ 14,048,000
Unrecognized compensation expense related to unvested options			$ 42,100,000
Vesting period			1 year 3 months 18 days
Warrant outstanding	0		$ 0
Deferred income tax benefit			(205,000)	(3,978,000)
Stock Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred income tax benefit	$ 1,100,000	$ 1,900,000	$ 2,800,000	$ 3,800,000
Restricted Stock Award [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years
Restricted Stock Award [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			4 years
Restricted Stock Units [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			2 years
Number of shares issuable at the end of the vesting period, percentage			0.00%
Restricted Stock Units [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years
Number of shares issuable at the end of the vesting period, percentage			200.00%