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Note 7 - Debt, Credit Agreement and Leases - Debt Summary (Details) - Senior Notes [Member] - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Line of Credit Facility [Line Items] |  |
Principal | $ 510,600 | $ 511,473
Unamortized discount/premium and issuance costs | (3,290) | (3,473)
Long-term debt balance | 507,310 | 508,000
The 2028 Senior Notes [Member] |  |
Line of Credit Facility [Line Items] |  |
Principal | 475,000 | 475,000
Unamortized discount/premium and issuance costs | (3,501) | (3,730)
Long-term debt balance | 471,499 | 471,270
IQ Notes [Member] |  |
Line of Credit Facility [Line Items] |  |
Principal | 35,600 | 36,473
Unamortized discount/premium and issuance costs | 211 | 257
Long-term debt balance | $ 35,811 | $ 36,730

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-4 + Details
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