Amount of accumulated interest costs capitalized as part of property, plant and equipment cost basis.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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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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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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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Additional debt instrument fee amount.

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Common Stock Warrant Exercise Price

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Debt Instrument, Additional Basis Spread Decrease on Variable Rate

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Line Of Credit Facility, Incremental Drawdowns, Minimum

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Purchase Percentage Of Equipment Cost

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Restocking Fee, Percent

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Debt Financing - Additional Information (Detail) - USD ($)	1 Months Ended		12 Months Ended
	Sep. 30, 2018	Jun. 30, 2014	Dec. 31, 2019	Dec. 31, 2018	Sep. 25, 2018
Debt Instrument [Line Items]
Restocking fee			6.00%
Common stock, shares issued (in shares)	75,000		23,503,214	11,973,039
Common stock warrant exercise price (in USD per share)	$ 3.5928
Proceeds from issuance of warrants	$ 243,000
Property and equipment, gross			$ 51,484,000	$ 38,275,000
Capitalized interest costs			$ 1,500,000
Senior Subordinated Notes \| Amended Hercules Secured Term Loan
Debt Instrument [Line Items]
Drawdown Amount		$ 15,000,000
Effective Interest Rate		7.95%
Debt variable interest rate		7.95%
Debt additional variable interest rate decrease		5.25%
Additional debt end of term charge					$ 400,000
Trinity Capital Fund III, L.P.
Debt Instrument [Line Items]
Debt instrument term			3 months
Build to Suit Obligation \| Trinity Capital Fund III, L.P.
Debt Instrument [Line Items]
Aggregate principal amount	$ 14,000,000
Line of credit			$ 10,600,000
Incremental drawdown, minimum			$ 500,000
Debt instrument term	36 months		36 months
Drawdown Amount			$ 14,000,000		$ 5,000,000
Build-to-Suit Obligation, Condition One \| Trinity Capital Fund III, L.P.
Debt Instrument [Line Items]
Purchase percentage of equipment cost			12.00%
Build-to-Suit Obligation, Condition Two \| Trinity Capital Fund III, L.P.
Debt Instrument [Line Items]
Purchase percentage of equipment cost			4.00%
Construction in Progress
Debt Instrument [Line Items]
Property and equipment, gross			$ 20,602,000	$ 9,558,000
Germany \| Construction in Progress
Debt Instrument [Line Items]
Property and equipment, gross			$ 12,400,000