Proceeds from issuance initial public offering gross.

No definition available.

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- Definition

Amount of amortization expense attributable to debt issuance costs.

+ References

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- Definition

The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

+ References

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

Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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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

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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- Definition

Amount of increase (decrease) of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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- Definition

Represents the portion of interest incurred in the period on debt arrangements that was charged against earnings, excluding amortization of debt discount (premium) and financing costs.

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- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

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Debt - Convertible Bridge Notes - Additional Information (Detail) - USD ($)	1 Months Ended		12 Months Ended
	Feb. 28, 2015	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Amortization of financing costs			$ 0	$ 107,000
Loss on extinguishment of debt				$ 4,239,000
2014 Convertible Bridge Notes [Member]
Debt Instrument [Line Items]
Debt instrument, face amount		$ 2,000,000
Debt instrument maturity date			Jun. 30, 2015
Debt instrument annual interest rate		8.00%		8.00%
Debt converted into shares of common stock	337,932
Share offering price	$ 6.00
Debt instrument, interest expense to coupon rate				$ 23,000
Amortization of financing costs				128,000
Gain in change in fair value				480,000
Loss on extinguishment of debt				$ 360,000
2014 Convertible Bridge Notes [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Gross proceeds		$ 40,000,000