Stock-Based Compensation (Details)	3 Months Ended
Mar. 31, 2020 plan shares
Stock-based compensation
Number of stock plans \| plan	3
2008 Plan
Stock-based compensation
Common stock available for grant (in shares)	0
2017 Omnibus Incentive Plan
Stock-based compensation
Common stock available for grant (in shares)	1,611,963
Stock Options
Stock-based compensation
Vesting period	4 years
Stock Options \| Maximum
Stock-based compensation
Expiration period	10 years
Restricted stock units
Stock-based compensation
Vesting period	3 years

Share-based Compensation, Number of Stock Plans

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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.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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+ References

No definition available.

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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.

+ References

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-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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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.

+ References

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