Supplementary Financial Statement Information (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2021 |
Jun. 30, 2020 |
Jun. 30, 2021 |
Jun. 30, 2020 |
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| Supplementary Financial Statement Information [Abstract] | ||||
| Revenue recognized | $ 164 | $ 390 | $ 207 | $ 645 |
| Major customer –revenues percentage | 10.00% | |||
| Revenue percentage | 10.00% | |||
| X | ||||||||||
- Definition Concentration Risk Percentage. No definition available.
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| X | ||||||||||
- Definition Revenue percentage. No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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