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Note 12 - Share-based Payments (Details Textual) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Statement Line Items [Line Items] |  |  |
Increase (decrease) through share-based payment transactions, equity | $ 484 |  | $ 216
Expense from equity-settled share-based payment transactions in which goods or services received did not qualify for recognition as assets | $ 484 | $ (0) | (0)
Restricted stock units (RSUs) [member] |  |  |
Statement Line Items [Line Items] |  |  |
Vesting period of other equity instruments | 3 |  |
Performance share units (PSUs) [member] |  |  |
Statement Line Items [Line Items] |  |  |
Liabilities from share-based payment transactions | $ 2,217 | 3,027 |
Total expense from share-based payment transactions in which goods or services received did not qualify for recognition as assets | 853 | 692 | 634
Value of other equity instruments exercised or vested in share-based payment arrangement | 2,272 |  |
Proceeds from issuing other equity instruments | 1,028 | $ 420 |
Value of other equity instruments exercised or vested in share-based payment arrangement, share capital | 1,244 |  | 216
Increase (decrease) through share-based payment transactions, equity | $ 804 |  |
Performance share units (PSUs) [member] | Bottom of range [member] |  |  |
Statement Line Items [Line Items] |  |  |
Vesting period of other equity instruments | 1 |  |
Performance probability | 93.00% | 93.00% |
Performance multiplier | 93.00% | 93.00% |
Performance share units (PSUs) [member] | Top of range [member] |  |  |
Statement Line Items [Line Items] |  |  |
Vesting period of other equity instruments | 3 |  |
Performance probability | 100.00% | 100.00% |
Performance multiplier | 100.00% | 100.00% |
Equity-settled performance units (EPUs) [member] |  |  |
Statement Line Items [Line Items] |  |  |
Vesting period of other equity instruments | 3 |  |
Performance probability | 100.00% |  |
Minimum holding period of other equity instruments (Year) | 1 year |  |
Performance multiplier | 100.00% |  |
Expense from equity-settled share-based payment transactions in which goods or services received did not qualify for recognition as assets | $ 417 | $ 0 | 0
Share option programs [member] |  |  |
Statement Line Items [Line Items] |  |  |
Expense from equity-settled share-based payment transactions in which goods or services received did not qualify for recognition as assets | $ 67 | $ 0 | $ 0
Option life, share options granted | 10 |  |
Share-based compensation arrangement, percentage of outstanding stock maximum | 10.00% |  |
Number of share options outstanding in share-based payment arrangement at end of period | 20,000 |  |

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