Proceeds from issuance of common stock net of issuance cost.

No definition available.

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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 value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Details

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- Details

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Period Type:

- Details

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Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended
	Oct. 10, 2017	Oct. 05, 2017	Mar. 31, 2018
Common Stock [Member] \| JGB Debt [Member]
Class Of Stock [Line Items]
Common stock shares issued	651,240	288,022	6,161,331
Common stock offer price per share		$ 4.34	$ 4.33
Conversion of debentures into shares of common stock		$ 1,250	$ 26,700
2017 Public Offering [Member]
Class Of Stock [Line Items]
Common stock shares issued	4,992,840
Common stock offer price per share	$ 4.00
Net proceeds from common stock shares issued at public offering	$ 18,300
Over-allotments [Member]
Class Of Stock [Line Items]
Common stock shares issued	651,240