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Note 9 - Operating Segment Information - Segment Adjusted EBITDA Reconciliation (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Income before income tax expense | $ 4,592 | $ 945
Interest expense | 1,787 | 2,570
Depreciation and amortization | 3,252 | 3,388
Segment EBITDA | $ 9,631 | $ 6,903

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