Share-based compensation arrangement by share-based payment award, additional number of shares available for grant.

No definition available.

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- Definition

The maximum annual increase in the number of shares reserved under the plan as a proportion of outstanding common stock.

+ References

No definition available.

+ Details

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- Definition

Percentage of vesting of share-based compensation awards for monthly vesting tranches after the initial vesting tranche.

+ References

No definition available.

+ Details

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- Definition

Percentage of vesting of share-based compensation awards for quarterly vesting tranches after the initial vesting tranche.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award equity instruments other tan options vested and expected to vest outstanding number.

+ References

No definition available.

+ Details

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- Definition

Share based compensation arrangement by share based payment award maximum annual fair market value per employee.

+ References

No definition available.

+ Details

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- Definition

Share based compensation arrangement by share based payment award maximum voting power of all classes of stock.

+ References

No definition available.

+ Details

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- Definition

Share-based compensation arrangement by share-based payment award, nonvested awards, lowest potential aggregate fair values.

+ References

No definition available.

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- Definition

Period from the Plan effective date that the Plan expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Aggregate number of common shares reserved for future issuance.

+ References

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
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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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- Definition

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

+ References

No definition available.

+ Details

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- Definition

Unrecognized cost of unvested options awarded to employees as compensation.

+ References

No definition available.

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- Definition

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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- Definition

Additional share-based compensation cost recognized as a result of an occurrence of an event that accelerates its recognition.

+ References

No definition available.

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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.

+ References

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- Definition

Discount rate from fair value on purchase date that participants pay for shares.

+ References

+ Details

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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).

+ References

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

+ References

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

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

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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.

+ References

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

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ References

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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.

+ Details

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- Definition

The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

+ References

+ Details

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- Definition

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

+ References

+ Details

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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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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- 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.

+ References

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

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

+ References

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- Definition

Net number of share options (or share units) granted during the period.

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

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

+ Details

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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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- Definition

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

+ References

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- Definition

The increase or decrease in number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding, including vested options.

+ References

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

As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan.

+ References

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

The number of employees affected by the modification of an equity-based compensation plan.

+ References

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- Definition

Number of share instruments newly issued under a share-based compensation plan.

+ References

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- Definition

The number of shares or units of entity securities issued in the transaction in which equity securities were issued to pay for goods or nonemployee services.

+ References

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- Definition

Number of shares for which recognition of compensation cost was accelerated.

+ 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.

+ References

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- Definition

Number of options vested.

+ References

No definition available.

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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

Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.

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- Definition

Number of share options (or share units) exercised during the current period.

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Share/Stock-Based Compensation - Additional Information (Details)				1 Months Ended	3 Months Ended	12 Months Ended
	Apr. 06, 2016 USD ($) shares	Apr. 05, 2016 shares	Mar. 10, 2015 Employee shares	May 31, 2016 USD ($) Employee shares	Mar. 31, 2016	Dec. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 USD ($) $ / shares shares	Jan. 31, 2017 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares granted						731,779
Shares forfeited						214,692
Number of vested and unvested shares of restricted common stock converted			253,232
Number of vested and unvested shares of option to purchase common stock converted			100,446			1,137,407
Entity number of employees \| Employee			7
Outstanding option awards						1,146,935	629,848
Tax benefits recognized \| $						$ 0	$ 0	$ 0
Lowest potential aggregate fair values of unvested awards \| $						$ 0	0	0
Expected dividend yield						0.00%
Non-Employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expense recognized for unvested non-employee awards \| $						$ 0	$ 0	$ 0
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average grant date fair value \| $ / shares						$ 7.04	$ 3.48
Entity number of employees \| Employee				21
Shares of common stock issued to employees				542,392
Recognized stock-based compensation expense \| $				$ 89,000
Stock option exercised						0
Intrinsic value of options exercised \| $							$ 25,000
Stock option issued						0
Stock option vested						0
Unrecognized stock-based compensation expense for options \| $						$ 3,100,000
Weighted average period over which unrecognized compensation is expected to be recognized						2 years 7 months 6 days
Stock Options \| Non-Employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock option issued							25,387
Stock option vested							11,279
Four Year Vesting \| Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Option vesting, year				4 years	4 years
Stock option vesting rights				25.00%	25.00%
Stock option vesting quarterly thereafter					6.25%
Stock option vesting monthly thereafter				2.08%
Five Year Vesting \| Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Option vesting, year				4 years	5 years
Stock option vesting rights				25.00%	25.00%
Stock option vesting quarterly thereafter					6.25%
Stock option vesting monthly thereafter				2.08%
Unvested Restricted Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of unvested stock outstanding						75,932	118,554
Number of vested shares						42,622
RSAs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of vesting fair value \| $						$ 258,000	$ 933,000
Unrecognized stock-based compensation expense for RSAs \| $						$ 89,000
Weighted average period over which unrecognized compensation is expected to be recognized						1 year 1 month 6 days
RSAs \| Non-Employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of stock issued							253,232
Shares, Granted						0	61,096
Number of vested shares							32,588
Class B Common
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Awards granted, less forfeitures			355,156
Shares forfeited			1,474
2013 Equity Incentive Plan \| Class B Common
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares granted								355,156
Weighted average grant date fair value \| $ / shares								$ 1.66
2015 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Awards granted, expiration period						10 years
Combined voting power of all classes of stock						10.00%
Option vesting, year						5 years
Number of common stock to option outstanding						699,573
Number of common stock available for issuance		509,869
2015 Equity Incentive Plan \| Unvested Restricted Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of unvested stock outstanding						75,932
2015 Equity Incentive Plan \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of market value of common stock						100.00%
2016 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Initial reserves of common stock		1,100,000
Percentage of outstanding share of common stock						4.00%
2016 Equity Incentive Plan \| Subsequent Event
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Additional number of shares available for issuance									537,233
2016 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total number of common stock reserved for issuance						1,624,561
Outstanding option awards						447,362
2016 Plan and 2015 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Awards granted, expiration period		10 years
Expected dividend yield						0.00%	0.00%
2016 Plan and 2015 Plan \| Four Year Vesting
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Option vesting, year		4 years
2016 Plan and 2015 Plan \| Five Year Vesting
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Option vesting, year		5 years
2016 Plan and 2015 Plan \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Option vesting, year		4 years
2016 Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of common stock available for issuance						145,939
Total number of common stock reserved for issuance	165,000
Percentage of discount through payroll deductions to eligible employees to purchase common stock	15.00%
Percentage of fair market value of common stock	85.00%
Stock option to purchase an aggregate of common stock shares						19,061
Maximum number of shares permitted for per employee	2,000
Maximum purchase value per employee under employee stock purchase plan \| $	$ 25,000
Employee stock purchase plan termination period	10 years
Expected dividend yield						0.00%