Borrowings - Loan Agreement - Schedule of Notes Payable (Detail) $ in Thousands	Dec. 31, 2018 USD ($)
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Roll Forward
Note payable	$ 15,000
Note payable, net of current portion	15,000
Debt discount, net of accretion	(293)
Accretion related to final payment	166
Note payable net of discount, long-term	$ 14,873

Accretion related to final payment on notes payable.

No definition available.

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- Definition

Notes payable, net of current portion.

+ References

No definition available.

+ Details

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- Definition

Amount, after accumulated amortization, of debt discount.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
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- Definition

Carrying value as of the balance sheet date of notes payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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+ Details

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- Definition

Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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