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Note 12 - Convertible Senior Notes - Schedule of Carrying Value of Convertible Senior Notes (Details) - USD ($) | Mar. 31, 2025 | Dec. 31, 2024 | Dec. 05, 2023
--- | --- | --- | ---
Net carrying amount | $ 134,229 | $ 134,497 |
The 5.250% Convertible Senior Notes Due 2026 [Member] |  |  |
Principal | 3,500,000 | 3,500,000 | $ 80,200,000
Unamortized debt issuance costs | 0 | (83,000) |
Net carrying amount | 3,500,000 | 3,417,000 |
Convertible Notes Maturing 2030 [Member] |  |  |
Principal | 125,000,000 | 125,000,000 |
Unamortized debt issuance costs | (4,179,000) | (4,336,000) |
Net carrying amount | 130,729,000 | 131,080,000 |
Premium upon issuance | $ 9,908,000 | $ 10,416,000 |

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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of a written promise to pay a note, initially due after one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the issuer or the holder. + 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/1943274/2147478546/942-210-S99-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
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