Note 19 - Fair Value Measurements - Carrying Value and Estimated Fair Value of Notes (Details) - Convertible Notes Payable [Member] $ in Thousands	Dec. 31, 2023 USD ($)
Reported Value Measurement [Member]
2025 Notes	$ 143,250
Estimate of Fair Value Measurement [Member]
2025 Notes	142,411
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
2025 Notes	0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
2025 Notes	142,411
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
2025 Notes	$ 0