Number of shares authorized for issuance under share-based payment arrangement which is approved by shareholders.

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Number of shares authorized for issuance under share-based payment arrangement as a result of expiration or forfeiture of awards under prior equity plan.

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Represents the period after termination to exercise share-based awards that were vested.

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Face amount or stated value per share of common stock.

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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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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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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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Number of options outstanding, including both vested and non-vested options.

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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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Stock Award Plans and Stock-Based Compensation (Details) - $ / shares shares in Thousands		12 Months Ended
	May 12, 2012	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	May 02, 2012
Stock Award Plans and Stock-Based Compensation
Common stock, par value (in dollars per share)		$ 0.001	$ 0.001
Equity incentive plan 2012
Stock Award Plans and Stock-Based Compensation
Number of shares of common stock originally reserved for future grant					9,500
Common stock, par value (in dollars per share)					$ 0.001
Number of shares approved	7,760
Shares from expirations or forfeitures	1,780
Number of shares of common stock available for future grants		500
Options outstanding		0
Unvested restricted stock units outstanding		500
Restricted Stock Units
Stock Award Plans and Stock-Based Compensation
Granted (in shares)		249
Unvested restricted stock units outstanding		465	538
Stock Option Awards \| Equity incentive plan 2012
Stock Award Plans and Stock-Based Compensation
Options expiration period		7 years
Restricted Stock
Stock Award Plans and Stock-Based Compensation
Granted (in shares)		0	0	0
Restricted Stock \| Equity incentive plan 2012
Stock Award Plans and Stock-Based Compensation
Granted (in shares)		0	0	0
Employees \| Restricted Stock Units
Stock Award Plans and Stock-Based Compensation
Vesting period		4 years
Employees \| Stock Option Awards
Stock Award Plans and Stock-Based Compensation
Vesting period		4 years
Period after termination to exercise awards that were vested		90 days
Period after termination to retiring employees to exercise vested awards		1 year
Non-employee members of Board of Director \| Restricted Stock Units
Stock Award Plans and Stock-Based Compensation
Vesting period		1 year
Non-employee members of Board of Director \| Stock Option Awards
Stock Award Plans and Stock-Based Compensation
Vesting period		6 months