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Note 8 - Accumulated Other Comprehensive Income (Loss) - Accumulated Other Comprehensive Loss Reported in the Consolidated Balance Sheets (Details) - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2023 | Jun. 30, 2022
Balances December 31, 2022 | $ 331,194 | $ 329,976
Balances March 31, 2023 | 341,359 | 327,370
Accumulated Foreign Currency Adjustment Attributable to Parent [Member] |  |
Balances December 31, 2022 | (10,619) | (7,851)
Reclassification adjustments | 0 | 0
Current period benefit (charge) | 278 | (2,864)
Income tax benefit (charge) | 0 | 0
Balances March 31, 2023 | (10,341) | (10,715)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] |  |
Balances December 31, 2022 | (617) | 0
Reclassification adjustments | (588) | 0
Current period benefit (charge) | 2,023 | 0
Income tax benefit (charge) | (341) | 0
Balances March 31, 2023 | 477 | 0
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] |  |
Balances December 31, 2022 | (13,238) | (22,479)
Reclassification adjustments | 583 | 2,716
Current period benefit (charge) | (72) | 0
Income tax benefit (charge) | (145) | (630)
Balances March 31, 2023 | (12,872) | (20,393)
AOCI Attributable to Parent [Member] |  |
Balances December 31, 2022 | (24,474) | (30,330)
Reclassification adjustments | (5) | 2,716
Current period benefit (charge) | 2,229 | (2,864)
Income tax benefit (charge) | (486) | (630)
Balances March 31, 2023 | $ (22,736) | $ (31,108)

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