Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands |
ATM [Member]
Common Stock Outstanding [Member]
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ATM [Member]
Additional Paid-in Capital [Member]
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ATM [Member]
Retained Earnings [Member]
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ATM [Member]
Treasury Stock, Common [Member]
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ATM [Member] |
Public Offering [Member]
Common Stock Outstanding [Member]
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Public Offering [Member]
Additional Paid-in Capital [Member]
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Public Offering [Member]
Retained Earnings [Member]
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Public Offering [Member]
Treasury Stock, Common [Member]
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Public Offering [Member] |
Yulho agreement [Member]
Common Stock Outstanding [Member]
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Yulho agreement [Member]
Additional Paid-in Capital [Member]
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Yulho agreement [Member]
Retained Earnings [Member]
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Yulho agreement [Member]
Treasury Stock, Common [Member]
|
Yulho agreement [Member] |
Common Stock Outstanding [Member] |
Additional Paid-in Capital [Member] |
Retained Earnings [Member] |
Treasury Stock, Common [Member] |
Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Balance (in shares) at Dec. 31, 2021 | 70,416,552 | 0 | ||||||||||||||||||
| Balance at Dec. 31, 2021 | $ 70 | $ 211,309 | $ (183,846) | $ 0 | $ 27,533 | |||||||||||||||
| Stock-based compensation | $ 0 | 2,253 | 0 | $ 0 | 2,253 | |||||||||||||||
| Common stock issued upon RSU vesting (in shares) | 2,275,731 | 0 | ||||||||||||||||||
| Common stock issued upon RSU vesting | $ 2 | 0 | 0 | $ 0 | 2 | |||||||||||||||
| Common stock issued for consulting services (in shares) | 19,176 | 0 | ||||||||||||||||||
| Common stock issued for consulting services | $ 0 | 19 | 0 | $ 0 | 19 | |||||||||||||||
| Common stock, Issued (in shares) | 6,742,069 | 0 | 28,223 | 0 | ||||||||||||||||
| Common stock, Issued | $ 7 | $ 6,512 | $ 0 | $ 0 | $ 6,519 | $ 0 | 21 | 0 | $ 0 | 21 | ||||||||||
| Net loss | $ 0 | 0 | (15,431) | $ 0 | (15,431) | |||||||||||||||
| Balance (in shares) at Dec. 31, 2022 | 79,481,751 | 0 | ||||||||||||||||||
| Balance at Dec. 31, 2022 | $ 79 | 220,114 | (199,277) | $ 0 | 20,916 | |||||||||||||||
| Stock-based compensation | $ 0 | 2,532 | 0 | $ 0 | 2,532 | |||||||||||||||
| Common stock issued upon RSU vesting (in shares) | 1,633,506 | 428,566 | ||||||||||||||||||
| Common stock issued upon RSU vesting | $ 2 | (577) | 0 | $ (516) | (1,091) | |||||||||||||||
| Common stock issued for consulting services (in shares) | 15,781 | 0 | ||||||||||||||||||
| Common stock issued for consulting services | $ 0 | 12 | 0 | $ 0 | 12 | |||||||||||||||
| Common stock, Issued (in shares) | 3,244,302 | 0 | 3,244,302 | 18,193,000 | 0 | 4,545,455 | 0 | 104,227 | 0 | |||||||||||
| Common stock, Issued | $ 3 | $ 3,783 | $ 0 | $ 0 | $ 3,786 | $ 18 | $ 18,300 | $ 0 | $ 0 | $ 18,318 | $ 5 | $ 4,624 | $ 0 | $ 0 | $ 4,629 | $ 0 | 96 | 0 | $ 0 | 96 |
| Net loss | 0 | 0 | (23,938) | 0 | (23,938) | |||||||||||||||
| Warrant expense related to Yulho agreement | $ 0 | 181 | 0 | $ 0 | $ 181 | |||||||||||||||
| Common stock issued for employee stock purchase plan sales (in shares) | 192,707 | 0 | 192,707 | |||||||||||||||||
| Common stock issued for employee stock purchase plan sales | $ 0 | 122 | 0 | $ 0 | $ 122 | |||||||||||||||
| Common stock issued for class action settlement (in shares) | 469,366 | 0 | 469,366 | |||||||||||||||||
| Common stock issued for class action settlement | $ 1 | 500 | 0 | $ 0 | $ 501 | |||||||||||||||
| Balance (in shares) at Dec. 31, 2023 | 107,880,095 | 428,566 | ||||||||||||||||||
| Balance at Dec. 31, 2023 | $ 108 | $ 249,687 | $ (223,215) | $ (516) | $ 26,064 |
| X | ||||||||||
- Definition Number of new stock issued for class action settlement during the period. No definition available.
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| X | ||||||||||
- Definition Value of stock issued in lieu of cash for class action settlement contributed to the entity. No definition available.
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| X | ||||||||||
- Definition Amount of increase to additional paid-in capital (APIC) for recognition of cost for option under share-based payment arrangement. No definition available.
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| X | ||||||||||
- Definition Amount of increase in additional paid in capital (APIC) resulting from the issuance of warrants. Includes allocation of proceeds of debt securities issued with detachable stock purchase warrants. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Number of shares issued which are neither cancelled nor held in the treasury. No definition available.
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| X | ||||||||||
- Definition Number of shares issued during the period as a result of an employee stock purchase plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders. No definition available.
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| X | ||||||||||
- Definition Number of new stock issued during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Aggregate change in value for stock issued during the period as a result of employee stock purchase plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Value of stock issued in lieu of cash for services contributed to the entity. Value of the stock issued includes, but is not limited to, services contributed by vendors and founders. No definition available.
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| X | ||||||||||
- Definition Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Value of stock related to Restricted Stock Awards issued during the period, net of the stock value of such awards forfeited. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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