Note 9 - Fair Value Measurement (Details Textual)	Sep. 30, 2024 USD ($)
IQ Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes Payable, Total	$ 35,900,000
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Credit agreement carrying and fair value	13,000,000
Fair Value, Inputs, Level 1 [Member] | IQ Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes Payable, Total	$ 37,200,000
Fair Value, Inputs, Level 3 [Member] | IQ Notes [Member] | Measurement Input, Annual Yield [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Measurement Input	0.0612
Senior Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes Payable, Total	$ 472,000,000
Senior Notes [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes Payable, Total	$ 484,700,000