Share based compensation arrangement by share based payment award voting rights of common stock holding percentage.

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- Definition

Aggregate number of common shares reserved for future issuance.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

Amount of cost to be recognized for option under share-based payment arrangement.

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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.

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued 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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-Publisher FASB
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- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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-Publisher FASB
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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

The highest quantity of shares an employee can purchase under the plan per period.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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-Publisher FASB
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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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-Publisher FASB
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- Definition

Sets forth the nature of any other increase or decrease in the number of shares reserved for issuance under the option plan.

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-Publisher FASB
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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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Stock-Based Compensation - Additional Information (Details) - USD ($)	1 Months Ended		12 Months Ended
	Oct. 31, 2015	Jun. 30, 2012	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2020	Jan. 01, 2019	Dec. 31, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares reserved for issuance, shares			7,141,230	5,549,908
Aggregate intrinsic value of options exercised			$ 14,300,000	$ 21,100,000	$ 9,800,000
Weighted average grant date fair value of options granted			$ 27.02	$ 34.70	$ 9.92
Unamortized stock-based compensation			$ 55,300,000
Stock option average expected recognition period			2 years 4 months 24 days
Unrecognized share based compensation expense				$ 340,000	$ 248,000			$ 174,000
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares reserved for issuance, shares			5,315,254	3,864,407
RSU
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock option average expected recognition period			3 years 1 month 6 days
Weighted average grant date fair value of RSUs granted			$ 45.36	$ 53.27
Total fair value vested			$ 2,000,000.0	$ 167,000	$ 0
Unamortized stock-based compensation relating to RSUs			$ 27,900,000
2012 Equity Incentive Plan \| Incentive Stock Options \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of estimated fair value of common stock		100.00%
2012 Equity Incentive Plan \| Nonstatutory Stock Options \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of estimated fair value of common stock		85.00%
2012 Equity Incentive Plan \| Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Terms of options granted			10 years
Vesting period			4 years
2012 Equity Incentive Plan \| Stock Options \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of estimated fair value of common stock		110.00%
2012 Equity Incentive Plan \| Stock Options \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Employee owning voting rights of stock options		10.00%
2015 Stock Option and Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period			4 years
Shares reserved for issuance, shares			685,435	904,785			1,611,557
Number of shares reserved for issuance under the option plan, description			(i) the number of shares represented by awards outstanding under the Company’s 2012 Equity Incentive Plan that are forfeited or lapse unexercised and which following the pricing date are not issued under the 2012 Plan, and (ii) an annual increase on January 1 of each year beginning on January 1, 2017.
2015 Stock Option and Incentive Plan \| Subsequent Event
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares reserved for issuance, shares						1,855,162
2015 Stock Option and Incentive Plan \| IPO
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares reserved for issuance, shares	1,650,000
2015 Equity Incentive Plan \| Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of estimated fair value of common stock	85.00%
Shares reserved for issuance, shares	255,000						402,889
Number of common stock purchased by one employee	2,500
2015 Equity Incentive Plan \| Employee Stock Purchase Plan \| Subsequent Event
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares reserved for issuance, shares						463,790