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Employee Stock Purchase Plans, Purchase Of Stock Options In Relation To Purchase Of Common Stock, Number Of Vesting Anniversaries From Grand Date

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- Definition

Employee Stock Purchase Plans, Purchase Of Stock Options In Relation To Purchase Of Common Stock, Period

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Employee Stock Purchase Plans, Restricted Common Stock Granted In Proportion To Purchase Of Common Stock, Number Of Vesting Anniversaries From Grand Date

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Employee Stock Purchase Plans, Restricted Common Stock Granted In Proportion To Purchase Of Common Stock, Percentage

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Employee Stock Purchase Plans, Restricted Common Stock Granted In Proportion To Purchase Of Common Stock, Vesting Percentage

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- Definition

Employee Stock Purchase Plans, Sale Of Stock, Restricted Period

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

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Stockholders' Equity - Incentive Plan (Details) - USD ($)		12 Months Ended
	Jun. 12, 2014	Dec. 31, 2019	May 08, 2018
Class of Stock [Line Items]
Number of shares authorized (in shares)			6,000,000.0
Available future grants and awards (in shares)		1,800,000
Award vesting period		4 years
Restricted Stock
Class of Stock [Line Items]
Award vesting period		4 years
Restricted Stock Units (RSUs)
Class of Stock [Line Items]
Award vesting period		3 years
Stock Purchase Plan \| Employee Stock
Class of Stock [Line Items]
Maximum stock purchase per employee	$ 1,000,000
Stock purchase plan restricted sale of stock period	2 years
Percent of common stock granted in proportion to common stock purchased	20.00%
Vesting percentage of restricted stock granted in relation to shares purchased under the Stock Purchase Plan	50.00%
Vesting period of restricted stock granted in relation to shares purchased under the Stock Purchase Plan	2 years
Term for stock option purchase in relation to Stock Purchase Plan	5 years
Vesting period of stock options purchased in relation to shares purchased under the Stock Purchase Plan	2 years
Vesting percentage of purchase of stock options in relation to shares purchased under the Stock Purchase Plan	50.00%
Non-Employee Chairman \| Stock Purchase Plan \| Employee Stock
Class of Stock [Line Items]
Vesting percentage of purchase of stock options in relation to shares purchased under the Stock Purchase Plan	50.00%
Non-Employee Board Member \| Stock Purchase Plan \| Employee Stock
Class of Stock [Line Items]
Vesting percentage of purchase of stock options in relation to shares purchased under the Stock Purchase Plan	35.00%
Minimum \| Executive Officer \| Stock Purchase Plan \| Employee Stock
Class of Stock [Line Items]
Vesting percentage of purchase of stock options in relation to shares purchased under the Stock Purchase Plan	50.00%
Maximum \| Executive Officer \| Stock Purchase Plan \| Employee Stock
Class of Stock [Line Items]
Vesting percentage of purchase of stock options in relation to shares purchased under the Stock Purchase Plan	70.00%