Note 12 - Stock Based Compensation (Details Textual) - USD ($) $ in Thousands |
3 Months Ended | ||
|---|---|---|---|
Mar. 31, 2023 |
Mar. 31, 2022 |
Feb. 27, 2015 |
|
| APIC, Share-Based Payment Arrangement, Option, Increase for Cost Recognition | $ 307 | $ 169 | |
| Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $ 1,300 | ||
| Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) | 1 year 8 months 12 days | ||
| 2015 Stock Option and Incentive Plan [Member] | |||
| Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares) | 250,000 | ||
| 2015 Stock Option and Incentive Plan [Member] | Restricted Stock [Member] | Minimum [Member] | |||
| Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 3 years | ||
| 2015 Stock Option and Incentive Plan [Member] | Restricted Stock [Member] | Maximum [Member] | |||
| Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 5 years | ||
| 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 cost not yet recognized for nonvested award under share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- 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. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Number of shares authorized for issuance under share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
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