Note 12 - Convertible Senior Notes (Tables)

6 Months Ended

Jun. 30, 2025

Notes Tables

Convertible Debt [Table Text Block]

	June 30,			December 31,
	2025			2024
2026 Notes
Principal	$	3,500		$	3,500
Unamortized debt issuance costs		—			(83	)
Net carrying amount		3,500			3,417
2030 Notes
Principal		125,000			125,000
Premium upon issuance		9,398			10,416
Unamortized debt issuance costs		(3,962	)		(4,336	)
Net carrying amount		130,436			131,080
Total net carrying amount	$	133,936		$	134,497

Interest Income and Interest Expense Disclosure [Table Text Block]

	Three months ended June 30,						Six months ended June 30,
	2025			2024			2025			2024
Contractual interest expense	$	46		$	1,056		$	92		$	2,111
Amortization of debt issuance costs		350			359			701			709
Total interest cost	$	396		$	1,415		$	793		$	2,820
Effective interest rate		1.0	%		5.3	%		1.0	%		5.3	%