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Convertible bonds outstanding.

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Debt conversion discount rate.

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Debt current and non current.

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Debt instrument extend date.

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Future minimum principal payments due in next twelve months.

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License upfront fees payable.

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Number of capital leases

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The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company.

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Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock.

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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.

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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.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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

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

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

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of unrealized gain (loss) recognized in the income statement for a financial instrument classified as derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Per share or per unit amount of equity securities issued.

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Debt - Additional Information (Detail)			3 Months Ended	12 Months Ended
Debt - Additional Information (Detail)	Sep. 29, 2017 USD ($) $ / shares shares	Jun. 14, 2017 USD ($) shares	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($) Lease $ / shares shares	Dec. 31, 2016 USD ($)
Debt Instrument [Line Items]
Total Debt				$ 1,981,000	$ 41,807,000
Mortgage payment extended date				Jul. 30, 2018
Future minimum principal payment				$ 1,300,000
Convertible bonds		$ 24,000,000			16,129,000
Amount converted to common stock		68,000,000		98,929,000
Convertible debt carrying value		$ 55,800,000
Shares issued in conversion \| shares		7,727,273
Convertible debt fair value				13,200,000	8,300,000
Loss due to changes in the derivative liability				15,400,000	500,000
Convertible bonds outstanding				$ 0
Number of capital leases \| Lease				3
IPO
Debt Instrument [Line Items]
Common stock share price \| $ / shares				$ 11.00
Common Stock \| IPO
Debt Instrument [Line Items]
Common stock share price \| $ / shares				$ 11.00
Convertible Bonds
Debt Instrument [Line Items]
Convertible debt carrying value		$ 55,800,000
Convertible bonds, aggregate principal value	$ 7,000,000	$ 68,000,000
Common stock discount rate	20.00%
Convertible Bonds \| Common Stock
Debt Instrument [Line Items]
Shares issued upon conversion \| shares	795,455	7,727,273
Convertible Bonds \| Common Stock \| IPO
Debt Instrument [Line Items]
Shares issued upon conversion \| shares				8,522,728
Common stock share price \| $ / shares	$ 11
License Agreement \| Hanmi
Debt Instrument [Line Items]
Convertible bonds			$ 7,000,000
License upfront fees payable			$ 7,000,000
License Agreement \| Hanmi \| Bond
Debt Instrument [Line Items]
Interest rate			10.00%
Promissory note maturity, ending date			Oct. 01, 2018
License Agreement \| Hanmi \| Convertible Bonds
Debt Instrument [Line Items]
Convertible bonds, aggregate principal value	$ 7,000,000
Common stock discount rate	20.00%
License Agreement \| Hanmi \| Convertible Bonds \| Common Stock
Debt Instrument [Line Items]
Shares issued upon conversion \| shares	795,455
License Agreement \| Hanmi \| Convertible Bonds \| Common Stock \| IPO
Debt Instrument [Line Items]
Common stock share price \| $ / shares	$ 11
Convertible Bonds
Debt Instrument [Line Items]
Promissory note maturity, ending date				Oct. 01, 2018
Convertible bonds issued by company				$ 75,000,000	$ 75,000,000
Promissory Note
Debt Instrument [Line Items]
Promissory note maturity term				36 months
Interest rate				6.00%
Promissory note maturity, ending date				Jun. 01, 2018