Note 11 - Fair Value Measurement (Details Textual)	Dec. 31, 2023 USD ($)
Fair Value, Inputs, Level 1 [Member]
Carrying and fair value	$ 128,000,000
IQ Notes [Member]
Notes Payable, Total	36,600,000
IQ Notes [Member] \| Fair Value, Inputs, Level 1 [Member]
Notes Payable, Fair Value Disclosure	$ 37,200,000
IQ Notes [Member] \| Fair Value, Inputs, Level 3 [Member] \| Measurement Input, Annual Yield [Member]
Debt Instrument, Measurement Input	0.0663
Senior Notes [Member]
Notes Payable, Total	$ 478,700,000
Senior Notes [Member] \| Fair Value, Inputs, Level 1 [Member]
Notes Payable, Fair Value Disclosure	$ 481,600,000

Value of input used to measure debt instrument, including, but not limited to, convertible and non-convertible debt.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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Carrying amount of items included in each line item in the statement of financial position that are not eligible for the fair value option.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
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Fair value portion of notes payable.

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