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Note 12 - Convertible Senior Notes (Tables)

3 Months Ended

Mar. 31, 2025

Notes Tables

Convertible Debt [Table Text Block]

		*March 31,*				*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			9,908				10,416
Unamortized debt issuance costs			(4,179	)			(4,336	)
Net carrying amount			130,729				131,080
Total net carrying amount		$	134,229			$	134,497

Interest Income and Interest Expense Disclosure [Table Text Block]

		*Three months ended March 31,*
		*2025*				*2024*
Contractual interest expense		$	397			$	1,059
Amortization of debt issuance costs			296				350
Total interest cost		$	693			$	1,409
Effective interest rate			1.0	%			5.3	%