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Share-Based Compensation (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Stock Option [Member] |  |  |  |
Share-Based Compensation [Line Items] |  |  |  |
Options expiration period |  |  | 10 years |
Vesting period (years) |  |  | 5 years |
Share based compensation expenses | $ 218 | $ 304 | $ 426 | $ 576
Restricted Stock [Member] |  |  |  |
Share-Based Compensation [Line Items] |  |  |  |
Share based compensation expenses | $ 250 | $ 370 | $ 487 | $ 702
2016 Equity Plan [Member] | Stock Option [Member] |  |  |  |
Share-Based Compensation [Line Items] |  |  |  |
Shares reserved | 902,344 |  | 902,344 |
2016 Equity Plan [Member] | Restricted Stock [Member] |  |  |  |
Share-Based Compensation [Line Items] |  |  |  |
Shares reserved | 360,935 |  | 360,935 |
2020 Equity Plan [Member] | Stock Option [Member] |  |  |  |
Share-Based Compensation [Line Items] |  |  |  |
Shares reserved | 1,021,239 |  | 1,021,239 |
2020 Equity Plan [Member] | Restricted Stock [Member] |  |  |  |
Share-Based Compensation [Line Items] |  |  |  |
Shares reserved | 408,495 |  | 408,495 |
2016 And 2020 Equity Plan [Member] | Stock Option [Member] |  |  |  |
Share-Based Compensation [Line Items] |  |  |  |
Options expiration period |  |  | 10 years |
Minimum [Member] | 2016 And 2020 Equity Plan [Member] | Stock Option [Member] |  |  |  |
Share-Based Compensation [Line Items] |  |  |  |
Vesting period (years) |  |  | 3 years |
Maximum [Member] | 2016 And 2020 Equity Plan [Member] | Stock Option [Member] |  |  |  |
Share-Based Compensation [Line Items] |  |  |  |
Vesting period (years) |  |  | 5 years |

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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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