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Note 7 - Debt, Credit Agreement and Leases - Debt Summary (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Line of Credit Facility [Line Items] |  |
Less: current debt | $ (33,612) | $ (33,617)
Senior Notes [Member] |  |
Line of Credit Facility [Line Items] |  |
Principal | 551,554 | 531,525
Unamortized discount/premium and issuance costs | (2,530) | (2,724)
Total debt | 549,024 | 528,801
Less: current debt | (33,612) | (33,617)
Long-term debt | 515,412 | 495,184
Senior Notes [Member] | The 2028 Senior Notes [Member] |  |
Line of Credit Facility [Line Items] |  |
Principal | 475,000 | 475,000
Unamortized discount/premium and issuance costs | (2,588) | (2,816)
Total debt | 472,412 | 472,184
Less: current debt | 0 | 0
Long-term debt | 472,412 | 472,184
Senior Notes [Member] | IQ Notes [Member] |  |
Line of Credit Facility [Line Items] |  |
Principal | 33,554 | 33,525
Unamortized discount/premium and issuance costs | 58 | 92
Total debt | 33,612 | 33,617
Less: current debt | (33,612) | (33,617)
Long-term debt | 0 | 0
Senior Notes [Member] | Credit Agreement [Member] |  |
Line of Credit Facility [Line Items] |  |
Principal | 43,000 | 23,000
Unamortized discount/premium and issuance costs | 0 | 0
Total debt | 43,000 | 23,000
Less: current debt | 0 | 0
Long-term debt | $ 43,000 | $ 23,000

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