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Note 10 - Fair Value of Financial Instruments (Details Textual) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 USD ($) | Mar. 31, 2024 | Dec. 31, 2024 USD ($)
Accounts Receivable, after Allowance for Credit Loss | $ 171.1 |  |
Senior Notes [Member] |  |  |
Convertible Debt, Fair Value Disclosures | 102.9 |  | $ 148.6
Convertible Debt | $ 134.2 |  | $ 134.5
Revenue Benchmark [Member] | Customer Concentration Risk [Member] |  |  |
Number of Customers | 10 | 10 |
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Top Ten Customers [Member] |  |  |
Concentration Risk, Percentage | 97.00% | 92.00% |
Digicomm [Member] |  |  |
Accounts Receivable, after Allowance for Credit Loss | $ 136.2 |  |

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