Significant Accounting Policies and Estimates (Details) $ in Thousands |
3 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|
|
Mar. 31, 2022
USD ($)
segment
shares
|
Mar. 31, 2021
USD ($)
|
Dec. 31, 2021
USD ($)
|
May 03, 2021
shares
|
May 02, 2021
shares
|
May 26, 2020
shares
|
May 25, 2020
shares
|
Aug. 28, 2019
shares
|
|
| Allowance for doubtful accounts | $ 2 | $ 4 | ||||||
| Raw materials | 184 | 266 | ||||||
| Work-in-progress | 40 | 0 | ||||||
| Finished goods | 56 | 25 | ||||||
| prepaid insurance | 25 | 23 | ||||||
| General prepaid expenses | 141 | 54 | ||||||
| Remaining performance obligations | 0 | $ 0 | ||||||
| Cash, FDIC insured amount | 250,000 | |||||||
| Proceeds from issuance of convertible promissory notes | $ 0 | $ 1,337 | ||||||
| Number of operating segments | segment | 1 | |||||||
| 2019 Plan | ||||||||
| Common stock reserved for issuance | shares | 571,429 | 485,715 | 57,143 | |||||
| Number of shares available for grant | shares | 434,939 | 571,429 | 485,715 | |||||
| 2019 Plan | Executive officer | ||||||||
| Number of shares available for grant | shares | 14,286 | |||||||
| X | ||||||||||
- Definition Amount of allowance for credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation. No definition available.
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| X | ||||||||||
- Definition Aggregate number of common shares reserved for future issuance. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of asset related to consideration paid in advance for other costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of asset related to consideration paid in advance for insurance that provides economic benefits within a future period of one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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