Note 12 - Convertible Senior Notes - Schedule of Interest Expense (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2022 |
Sep. 30, 2021 |
Sep. 30, 2022 |
Sep. 30, 2021 |
|
| Amortization of debt issuance costs | $ 641 | $ 650 | ||
| The 5% Convertible Senior Notes Due 2024 [Member] | ||||
| Contractual interest expense | $ 1,006 | $ 1,006 | 3,019 | 3,018 |
| Amortization of debt issuance costs | 208 | 208 | 618 | 618 |
| Total interest cost | $ 1,214 | $ 1,214 | $ 3,637 | $ 3,636 |
| Effective interest rate | 5.10% | 5.10% | 5.10% | 5.10% |
| X | ||||||||||
- Definition Amount of amortization expense attributable to debt issuance costs. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Represents the portion of interest incurred in the period on debt arrangements that was charged against earnings, excluding amortization of debt discount (premium) and financing costs. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Details
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