The maximum offering duration period under the ESPP plan.

No definition available.

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- Definition

The potential increase in the number of outstanding shares available for grant in the equity incentive plan.

+ References

No definition available.

+ Details

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- Definition

The term of the equity incentive plan.

+ References

No definition available.

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- Definition

The potential increase percentage of outstanding shares on the last day of the immediately preceding fiscal year.

+ References

No definition available.

+ Details

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- Definition

The potential annual increase in the number of shares authorized under an equity incentive plan.

+ References

No definition available.

+ Details

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 14.F)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Section 50
-Paragraph 1
-Subparagraph (b)
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-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14
-Section F

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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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

Number of additional shares authorized for issuance under an established share-based compensation plan.

+ References

No definition available.

+ 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).

+ 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 (a)(3)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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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

Number of shares issued during the period as a result of an employee stock purchase plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

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-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30
-Article 5

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Stockholders' Equity (Details 2) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended	12 Months Ended
Stockholders' Equity (Details 2) - USD ($) $ in Thousands	Mar. 31, 2016	Jun. 30, 2014	Mar. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Mar. 18, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share base compensation				$ 12,815	$ 9,280	$ 7,035
2014 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employe Stock Purchase Plan ESPP, Offering Duration, Maximum		27 months
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date		85.00%
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in Shares)				124,380
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares)				1,875,620
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)		2,000,000
Allocated share base compensation				$ 400
The 2015 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares)				5,400,000			5,300,296
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)				5,000,000
Equity Incentive Plan, Term				10 years
Share Based Compensation Arrangement By Share Based Payment Award Potential Number of Additional Shares Authorized (in Shares)				3,000,000
Share Based Compensation Arrangement by Share Based Payment Award Potential Annual Increase in Shares, Percentage				2.50%
The 2015 Equity Incentive Plan \| Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized	1,129,962
The 2005 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity Incentive Plan, Term				10 years
Equity Incentive Plan Potential Increase In Shares			2.00%
Employee Consultant And Directors Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share base compensation				$ 7,900	6,700	5,900
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share base compensation				$ 3,900	$ 2,000	$ 600