Sale Of Stock, Conversion Of Existing Interests, Conversion Ratio

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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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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- Definition

Amount of cost to be recognized for option under share-based payment arrangement.

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- Definition

Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

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- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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No definition available.

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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 equity instruments other than options outstanding, including both vested and non-vested instruments.

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- Definition

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

Gross number of share options (or share units) granted during the period.

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- Definition

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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- Definition

Number of new stock issued during the period.

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Equity-based compensation - Narrative (Details) $ / shares in Units, $ in Thousands		3 Months Ended	12 Months Ended
	May 01, 2018 $ / shares shares	Jun. 30, 2018 USD ($)	Dec. 31, 2019 USD ($) shares	Dec. 31, 2018 USD ($) shares	Mar. 07, 2019 shares	Apr. 30, 2018 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense \| $			$ 1,526	$ 27,083
Class B Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends \| $				122
Equity-based compensation expense \| $		$ 6,200	0	26,134
LLC Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Conversion ratio	1
LLC Units And Common Class B
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense \| $		$ 19,800
Shares issued (in shares)	2,000,000.0
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense \| $			1,526	$ 949
Grant price (in dollars per share) \| $ / shares	$ 10.00
Compensation cost \| $			$ 5,200
Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant (in shares)					30,000
Shares outstanding (in shares)			13,000	5,000
Employee stock purchase plan \| Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant (in shares)						20,000
Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant (in shares)					3,000,000.0
Omnibus Incentive Plan \| Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant (in shares)						1,500,000
Director \| Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued (in shares)	365,000
Award vesting period	3 years
Period for recognition			3 years
Employee \| Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued (in shares)	1,650,000
Period for recognition			4 years
Initial Public Offering \| Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share price (in dollars per share) \| $ / shares	$ 10.00