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Note L - Convertible Senior Notes (Tables) | 12 Months Ended
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Dec. 31, 2021
Notes Tables |
Convertible Debt [Table Text Block] |
|  | December 31, |
|  | 2021 |
Principal |  | $ | 80,500 |
Unamortized debt issuance costs |  |  | (1,820 | )
Net carrying amount |  | $ | 78,680 |
Interest Income and Interest Expense Disclosure [Table Text Block] |
|  | Year ended December 31, |
|  | 2021 |  |  | 2020 |
Contractual interest expense |  | $ | 4,025 |  |  | $ | 4,025 |
Amortization of debt issuance costs |  |  | 826 |  |  |  | 831 |
Total interest cost |  | $ | 4,851 |  |  | $ | 4,856 |
Effective interest rate |  |  | 5.1 | % |  |  | 5.1 | %

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- Definition Tabular disclosure of convertible debt instrument. Includes, but is not limited to, principal amount and amortized premium or discount. + References No definition available. + Details
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- Definition Tabular disclosure of interest income and expense, including, but not limited to, interest income and expense from investments, loans, and securities. + References No definition available. + Details
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