Common Stock, Capital Shares Reserved for Future Issuance, Percentage Increase

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- Definition

Common Stock, Value, Remaining Amount Available to be Sold

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- Definition

Maximum Commission Based on Gross Sales of Secondary Offering

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- Definition

Proceeds from Issuance of Common Stock, Maximum Proceeds Allowed on Secondary Offering

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- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

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-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 30

-Article 5

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- Definition

The cash inflow from the additional capital contribution to the entity.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (a)

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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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

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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.

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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.

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-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

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

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- Definition

Maximum number of shares that may be issued in accordance with the plan as a proportion of outstanding capital stock.

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- Definition

Per share or per unit amount of equity securities issued.

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- Definition

Number of new stock issued during the period.

+ References

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-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

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

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Equity - Additional Information (Detail) - USD ($)		9 Months Ended
Equity - Additional Information (Detail) - USD ($)	Jan. 01, 2015	Sep. 30, 2015	Sep. 30, 2014	Mar. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock outstanding		24,313,222			23,774,465
Proceeds from issuance of common stock, Maximum				$ 50,000,000
Maximum commission based on gross sales of common stock (as a percent)		3.00%
Proceeds from issuance of common stock, net of deferred at-the-market offering costs		$ 10,154,000	$ 0
2014 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of outstanding stock	4.00%
2014 Equity Incentive Plan \| Restricted Stock Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards granted		157,286
2014 Employee Stock Purchase Plan \| Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of outstanding stock	1.00%
Common stock shares outstanding increase during period	237,744
Shares available for issuance		404,073
Common Stock \| 2014 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock shares outstanding increase during period	950,978
Shares underlying stock options granted		725,838
Shares available for issuance		286,984
Common Stock \| 2014 Equity Incentive Plan \| Board Member
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares underlying stock options granted		90,000
Common Stock \| 2014 Inducement Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for issuance		145,571
2015 ATM Agreement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued in connection with ATM Agreement (in shares)		352,544
Stock issued in connection with ATM Agreement , Weighted average price per share (in usd per share)		$ 30.76
Proceeds from issuance of common stock, net of deferred at-the-market offering costs		$ 10,100,000
Common stock remaining amount available to be sold		$ 39,200,000