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Note 10 - Fair Value of Financial Instruments (Details Textual) $ in Millions		3 Months Ended		6 Months Ended
	Jun. 30, 2025 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2024	Jun. 30, 2025 USD ($)	Jun. 30, 2024	Dec. 31, 2024 USD ($)
Accounts Receivable, after Allowance for Credit Loss	$ 211.5	$ 211.5		$ 211.5
Senior Notes [Member]
Convertible Debt, Fair Value Disclosures	122.9	122.9		122.9		$ 148.6
Convertible Debt	$ 133.9	$ 133.9		$ 133.9		$ 134.5
Revenue Benchmark [Member] | Customer Concentration Risk [Member]
Number of Customers	10		10	10	10
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Top Ten Customers [Member]
Concentration Risk, Percentage		98.00%	94.00%	97.00%	93.00%
Digicomm [Member]
Accounts Receivable, after Allowance for Credit Loss	$ 171.6	$ 171.6		$ 171.6

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Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company.

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