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Share-based compensation arrangement by share-based payment award, grant-date fair value.

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Share Based Compensation Arrangement By Share Based Payment Award, Number Of Offering Periods

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Share Based Compensation Arrangement By Share Based Payment Award, Offering Period

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Share based compensation arrangement by share based payment award plan, number of shares modified.

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Share Based Compensation Arrangement By Share Based Payment Award, Purchase Period

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Share based compensation arrangement by share based payment award target shares percentage

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

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Aggregate number of common shares reserved for future issuance.

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The cash outflow to reacquire common stock during the period.

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Amount of cash inflow from issuance of shares under share-based payment arrangement. Excludes option exercised.

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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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Description of method used to estimate fair value of award under share-based payment arrangement.

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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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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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Per share weighted-average price paid for shares purchased on open market for issuance under share-based payment arrangement.

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An excess of the fair value of the modified award over the fair value of the award immediately before the modification.

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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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Purchase price of common stock expressed as a percentage of its fair value.

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Number of shares issued during the period as a result of an employee stock purchase plan.

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Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Stockholder's Equity and Employee Benefit Plans - Additional Information (Details) $ / shares in Units, $ in Thousands		3 Months Ended			9 Months Ended
	Mar. 13, 2022	Sep. 30, 2022 USD ($) $ / shares shares	Mar. 31, 2022 shares	Sep. 30, 2021 USD ($) $ / shares	Sep. 30, 2022 USD ($) Offering_period $ / shares shares	Sep. 30, 2021 USD ($) $ / shares shares	Feb. 26, 2022 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant-date fair value of award					$ 3,400
Fair value assumptions, method used					Black-Scholes-Merton option pricing model
Proceeds, Issuance of shares, Share-based payment arrangement, Employee stock purchase program					$ 2,751	$ 3,873
Payments for repurchase of common stock					83,487	0
Stock-based compensation expense, net of amounts capitalized		$ 24,311		$ 24,594	76,155	73,766
Stock repurchase authorization amount		116,500			116,500
General and Administrative Expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense, net of amounts capitalized		8,087		7,202	24,367	21,310
Restructuring expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Modification charges under the reset provision					2,800
Stock-based compensation expense, net of amounts capitalized		0		$ 0	2,761	0
Chief Executive Officer \| General and Administrative Expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense, net of amounts capitalized		$ 500			$ 1,100
2018 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Offering period					24 months
Number of offering periods \| Offering_period					4
Length of purchase period					6 months
Employee share purchase price percentage					85.00%
Modification charges under the reset provision					$ 5,800
Proceeds, Issuance of shares, Share-based payment arrangement, Employee stock purchase program					$ 2,800	$ 3,900
Time-Based Awards \| Equity Incentive Plans \| New Hires
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					4 years
Time-Based Awards \| Equity Incentive Plans \| Existing Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					3 years
Performance Shares \| Three-Year Performance Period
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period grant date	Dec. 31, 2024
Performance Shares \| One-Year Performance Period
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period grant date	Dec. 31, 2022
Performance Shares \| Two-Year Performance Period
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period grant date	Dec. 31, 2023
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, modified \| shares			100,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, modified \| shares			1,200,000
Maximum \| Equity Incentive Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period					10 years
Maximum \| Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of target shares that may be earned upon achievement of threshold performance metric	200
Minimum \| Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of target shares that may be earned upon achievement of threshold performance metric	0
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized repurchase amount, stock repurchase program							$ 200,000
Stock Issued During Period, Shares, Employee Stock Purchase Plans \| shares					268,000	246,000
Stock Repurchased During Period, Shares \| shares		1,617,000			6,596,000
Payments for repurchase of common stock		$ 15,000			$ 83,500
Common Stock \| 2018 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant \| shares		17,857,376			17,857,376
Common Stock \| 2018 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Issued During Period, Shares, Employee Stock Purchase Plans \| shares					267,715	245,914
Weighted average purchase price \| $ / shares		$ 10.28		$ 15.75	$ 10.28	$ 15.75
Number of shares available for issuance \| shares		6,428,467			6,428,467