Common Stock, Capital Shares Reserved for Future Issuance, Annual Increase, Percentage of Outstanding Common Stock

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- Definition

Common Stock, Increase in Capital Shares Reserved for Future Issuance

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period, Achievement Percentage

+ References

No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Aggregate number of common shares reserved for future issuance.

+ References

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-Name Accounting Standards Codification
-Topic 210
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-Paragraph 1
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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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-Publisher FASB
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- Definition

Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

+ References

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- Definition

Unrecognized cost of unvested options awarded to employees as compensation.

+ References

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- Definition

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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.

+ References

No definition available.

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- Definition

Percentage of vesting of share-based compensation awards.

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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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- Definition

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

+ References

No definition available.

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- Definition

Number of shares of capital stock issued (purchased by employees) in connection with an employee stock ownership plan.

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Stock-based Compensation - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Jul. 27, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Feb. 22, 2018	Dec. 31, 2017	Jul. 26, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation, options		$ 10,221		$ 10,221
Share-based compensation expense		$ 5,498	$ 2,709	$ 14,472	$ 8,028
2017 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved (in shares)		2,414,688		2,414,688			1,600,000
Stock purchased under employee stock purchase plan (in shares)		0
2017 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved (in shares)		18,446,434		18,446,434			21,188,297	7,898,159
Percentage of common stock, outstanding				5.00%
Restricted stock units outstanding (in shares)		2,081,173		2,081,173			981,276
Employee stock purchase plan shares \| 2017 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved (in shares)	1,600,000
Percentage of common stock, outstanding	1.00%
Increase in common stock reserved (in shares)						814,688
Purchase price of common stock, percentage of market price of common stock				85.00%
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense, period for recognition				3 years 3 months 11 days
Unrecognized stock-based compensation		$ 41,148		$ 41,148
Grants in period (in shares)				1,400,212
Restricted stock units outstanding (in shares)		2,081,173		2,081,173			981,276
Restricted stock units \| 2017 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life				10 years
Award vesting period				4 years
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense, period for recognition				1 year 8 months 16 days
Employee Stock Option \| 2017 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life				10 years
Award vesting period				4 years
Performance RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)		8,913
Achievement percentage of performance conditions		100.00%
Restricted stock units outstanding (in shares)		143,890		143,890
Requisite service period		3 years
Share-based compensation expense		$ 379
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of units vesting		0.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of units vesting		200.00%