Summary of Significant Accounting Policies (Details) - USD ($) |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2022 |
Jun. 30, 2021 |
Jun. 30, 2022 |
Jun. 30, 2021 |
Dec. 31, 2021 |
|
| Disclosure of Summary of Significant Accounting Policies [Abstract] | |||||
| Accumulated deficit | $ (260,300,000) | $ (260,300,000) | |||
| Incurred net losses | 7,600,000 | $ 4,600,000 | 14,600,000 | $ 11,800,000 | |
| Available under the ATM program | 38,200,000 | ||||
| Available under its current shelf registration | $ 150,000,000 | ||||
| Investments had contractual maturities term | 1 year | ||||
| Foreign currency translation loss | 9,000 | ||||
| Foreign currency translation gain | $ 1,000 | ||||
| Restricted cash in connection with the patent and utility model infringement proceedings | 121,000 | $ 121,000 | $ 132,000 | ||
| Long-term restricted cash for a lease security deposit | $ 102,000 | $ 102,000 | |||
| X | ||||||||||
- Definition amount of available under the ATM program. No definition available.
|
| X | ||||||||||
- Definition Available under the shelf registration. No definition available.
|
| X | ||||||||||
- Definition Amount of long term cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Maximum term of the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount before tax of foreign currency transaction realized and unrealized gain recognized in the income statement. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount before tax of foreign currency transaction realized and unrealized loss recognized in the income statement. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition A segregation of retained earnings which is unavailable for dividend distribution. Includes also retained earnings appropriated for loss contingencies. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|