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Note 8 - Leases (Details Textual) $ in Millions | 12 Months Ended
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Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021
Finance Lease, Liability | $ 34.5 |  |
Fixed Assets, Net [Member] |  |  |
Finance Lease, Right-of-Use Asset, after Accumulated Amortization, Total | 41.2 | $ 10.7 |
Short-term Debt and Current Portion of Long-term Debt and Long-term Debt [Member] |  |  |
Finance Lease, Liability | $ 34.5 | $ 4.2 |
First Option to Extend Corporate Headquarters [Member] |  |  |
Lessee, Leases, Number of Extensions | 1 |  |
Lessee, Lease, Extension Lease Term (Year) | 10 years |  | 10 years
Second Option to Extend Corporate Headquarters [Member] |  |  |
Lessee, Leases, Number of Extensions | 2 |  |
Lessee, Lease, Extension Lease Term (Year) | 5 years | 5 years |

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- Definition Present value of lessee's discounted obligation for lease payments from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479041/842-20-45-1 + Details
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- Definition Amount, after accumulated amortization, of right-of-use asset from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479041/842-20-45-1 + Details
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- Definition The extension lease term of operating and financing leases of the lessee. + References No definition available. + Details
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- Definition The number of extensions under the operating and finance leases of the lessee. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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