Debt - Summary of Balances of Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Jun. 14, 2017	Dec. 31, 2016
Debt Disclosure [Abstract]
Current portion of promissory notes to related parties	$ 491		$ 1,123
Current portion of mortgage	835		766
Current portion of capital lease obligation	180
Long-term portion of promissory notes to related parties			496
Long-term portion of capital lease obligation	475
Convertible bonds, net of debt discount of $3,502 as of December 31, 2016			14,498
Convertible bonds—related parties, net of debt discount of $3,871 as of December 31, 2016		$ 24,000	16,129
Derivative liability			8,795
Total	$ 1,981		$ 41,807

Convertible bonds due to related parties noncurrent.

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- Definition

Debt current and non current.

+ References

No definition available.

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- Definition

Amount of capital lease obligation due within one year or the normal operating cycle, if longer.

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date.

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- Definition

Carrying amount of long-term convertible debt as of the balance sheet date, net of the amount due in the next twelve months or greater than the normal operating cycle, if longer. The debt is convertible into another form of financial instrument, typically the entity's common stock.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).

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Portion of the carrying amount as of the balance sheet date of obligations due all related parties that is payable after one year or beyond the normal operating cycle if longer.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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