Balance Sheets Details - Accrued Liabilities (Details) - USD ($) $ in Thousands |
Mar. 31, 2020 |
Dec. 31, 2019 |
|---|---|---|
| Balance Sheets Details [Abstract] | ||
| Accrued purchases | $ 5,654 | $ 4,386 |
| Accrued professional and outside service fees | 3,111 | 1,802 |
| Other | 158 | 352 |
| Total | $ 8,923 | $ 6,540 |
| X | ||||||||||
- Definition Accrued Purchase, Received Not Yet Billed No definition available.
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| X | ||||||||||
- Definition -- None. No documentation exists for this element. -- No definition available.
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| X | ||||||||||
- Definition Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of expenses incurred but not yet paid classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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