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Note 11 - Share-based Compensation - Stock-settled Stock Appreciation Rights Transactions (Details) - Stock Appreciation Rights (SARs) [Member] - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Jan. 01, 2021
Outstanding SARS (in shares) | 317,128 |  |
Outstanding (in dollars per share) | $ 13.47 |  |
Outstanding SARS, weighted average remaining life (Year) | 2 years 7 months 24 days | 3 years 4 months 9 days |
Outstanding SARS, aggregate intrinsic value | $ 2,205 |  | $ 2,031
Granted SARs (in shares) | 31,687 |  |
Granted SARS, weighted average exercise price (in dollars per share) | $ 25.75 |  |
Exercised SARs (in shares) | (57,756) |  |
Exercised SARS, weighted average exercise price (in dollars per share) | $ 12.54 |  |
Outstanding SARS (in shares) | 291,059 | 317,128 |
Outstanding SARS, weighted average exercise price (in dollars per share) | $ 14.99 | $ 13.47 |
Exercisable (in shares) | 129,268 |  |
Exercisable, weighted average exercise price (in dollars per share) | $ 16.40 |  |
Exercisable, weighted average remaining life (Year) | 1 year 9 months 29 days |  |
Exercisable, aggregate intrinsic value | $ 777 |  |

X
- Definition The weighted average exercise price for non-option equity instruments. + References No definition available. + Details
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- Definition The weighted average grant-date fair value of SARS exercised during the reporting period as calculated by applying the disclosed option pricing methodology. + References No definition available. + Details
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- Definition The weighted average exercise price of non-option equity instruments granted during the period. + References No definition available. + Details
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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of non-option equity awards outstanding and currently exercisable. + References No definition available. + Details
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- Definition Number of non-option equity instruments exercisable. + References No definition available. + Details
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- Definition Weighted average price at which the shares can be exercisable. + References No definition available. + Details
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- Definition Weighted average remaining contractual term for vested portions of non-options equity instruments outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of non-option equity awards outstanding. + References No definition available. + Details
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- Definition Weighted average remaining contractual term for non-option equity awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Number of non-option equity instruments exercised by participants. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Net number of non-option equity instruments granted to participants. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Number of equity instruments other than options outstanding, including both vested and non-vested instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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