Share based compensation arrangement by share based payment award excercise price premium percentage.

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- Definition

Aggregate number of common shares reserved for future issuance.

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- Definition

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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- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

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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- Definition

Discount rate from fair value on offering date that participants pay for shares.

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- Definition

The number of grants made 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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- 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.

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- Definition

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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- 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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No definition available.

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- Definition

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

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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No definition available.

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- Definition

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

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of options vested.

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No definition available.

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Equity-based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
	Jun. 01, 2018	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock granted		0	645,346
Number of unit expected to vest		1,012,766	844,354	1,229,863	273,354
Equity-based compensation expense		$ 1,100	$ 900
Remaining expense related to unvested restricted stock units		$ 15,400
Restricted Stock Units \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expense recognition period		12 months
Restricted Stock Units \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expense recognition period		42 months
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expense recognition period		22 months
Expense related to nonvested stock option grants		$ 2,200
Stock Options \| Executive Officer
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Equity-based compensation expense		$ 309	$ 252
Number of options granted		0	1,602,848
Percentage of premium on common stock value, options granted		15.00%
Weighted-average exercise price		$ 20.43
Award vesting period		3 years
Option expiration period		7 years
Stock options vested		534,283
Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock shares available for grant		7,500,000
Shares of common stock remain available for future grants		4,200,000
Plan \| Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock granted		0	645,346
Plan \| Restricted Stock Units \| Vest in First Quarter of 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of unit expected to vest		41,843
Plan \| Restricted Stock Units \| Vest in Third Quarter of 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of unit expected to vest		2,116
Plan \| Restricted Stock Units \| Vesting Quarterly
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of unit expected to vest		277,302
Plan \| Restricted Stock Units \| Cliff-Vest
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of unit expected to vest		29,181
Plan \| Restricted Stock Units \| Vest in First Quarter of 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of unit expected to vest		48,562
Plan \| Restricted Stock Units \| Vest in First Quarter of 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of unit expected to vest		177,236
Plan \| Restricted Stock Units \| Vest in Second Quarter of 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of unit expected to vest		1,000
Plan \| Restricted Stock Units \| Vest in Second Quarter of 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of unit expected to vest		6,998
Plan \| Restricted Stock Units \| Vest in Third Quarter of 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of unit expected to vest		9,901
Plan \| Restricted Stock Units \| Half of Units Granted \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting rights, percentage		25.00%
Plan \| Restricted Stock Units \| Half of Units Granted \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting rights, percentage		200.00%
2018 Employee Stock Purchase Plan \| Common Class A
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Equity-based compensation expense		$ 14	$ 92
Percentage of discount on fair market value of common stock	15.00%
Common stock purchased in the open market		67,844	25,519
2018 Employee Stock Purchase Plan \| Maximum \| Common Class A
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Amount of common stock may be granted	500,000