Note L - Convertible Senior Notes (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Convertible Debt [Table Text Block]

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

Interest Income and Interest Expense Disclosure [Table Text Block]

	Year ended December 31,
	2022			2021
Contractual interest expense	$	4,025		$	4,025
Amortization of debt issuance costs		826			826
Total interest cost	$	4,851		$	4,851
Effective interest rate		5.1	%		5.1	%