Common Stock, Shares Available for Sale, Value

No definition available.

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- Definition

Common stock shares unsold value.

+ References

No definition available.

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- Definition

Maximum amount available under ATM offering.

+ References

No definition available.

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- Definition

Percentage of proceeds payable as compensation to underwriter.

+ References

No definition available.

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- Definition

Stockholders Equity Note [Line Items]

+ References

No definition available.

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- Definition

Face amount or stated value per share of common stock.

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- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

+ References

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
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- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

+ Details

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- Definition

Number of new stock issued during the period.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 210
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Stockholders' Equity - Additional Information (Detail) - USD ($)		1 Months Ended	6 Months Ended
	Jan. 08, 2018	Jan. 31, 2018	Jun. 30, 2018	Jun. 30, 2017	May 05, 2016
Stockholders Equity Note [Line Items]
Proceeds from common stock sold			$ 69,117,000	$ 9,644,000
Amendment No. 2 \| Cantor \| Sales Agreement
Stockholders Equity Note [Line Items]
Maximum common stock offering price			132,200,000
Common stock registered for sale					$ 70,000,000
Amendment No. 3 \| Cantor \| Sales Agreement
Stockholders Equity Note [Line Items]
Proceeds from common stock sold			11,900,000
Maximum common stock offering price	$ 70,000,000
Common stock registered for sale			$ 57,800,000
Percentage of proceeds payable as compensation to underwriter	2.00%
Unsold shares of common stock, value	$ 31,400,000
Common stock, number of shares issued			1,800,000
Common Stock \| Underwritten Public Offering
Stockholders Equity Note [Line Items]
Common stock, shares issued and sold		14,030,000
Common stock, par value		$ 0.001
Common stock, sale of stock, price per share		$ 4.10
Proceeds from common stock sold		$ 57,200,000