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Note 12 - Convertible Senior Notes (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

Convertible Debt [Table Text Block]

		March 31,				December 31,
​		2023				2022
Principal		$	80,500			$	80,500
Unamortized debt issuance costs			(790	)			(994	)
Net carrying amount		$	79,710			$	79,506

Interest Income and Interest Expense Disclosure [Table Text Block]

		Three months ended March 31,
​		2023				2022
Contractual interest expense		$	1,006			$	1,006
Amortization of debt issuance costs			204				204
Total interest cost		$	1,210			$	1,210
Effective interest rate			5.1	%			5.1	%

X

- Definition

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