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Note 9 - Debt - Summary of Debt Outstanding (Details) $ in Thousands, € in Millions | Sep. 30, 2023 USD ($) | Sep. 30, 2023 EUR (€) | Jul. 05, 2023 USD ($) | Dec. 31, 2022 USD ($)
--- | --- | --- | --- | ---
Long-term debt, gross |  | $ 761,844 |  |  |  | $ 175,000 |
Debt discount and issuance costs |  | (18,174) |  |  |  | (5,964) |
Less: Current portion of long-term debt |  | (102,369) |  |  |  | 0 |
Total long-term debt |  | 641,301 |  |  |  | 169,036 |
Secured Debt [Member] |  |  |  |  |  |  |
Long-term debt, gross |  | 325,000 | [1] |  | $ 318,300 | 0 | [1]
Unsecured Debt [Member] |  |  |  |  |  |  |
Long-term debt, gross |  | 250,000 | [2] |  | $ 243,100 | 0 | [2]
The 8.00% Senior Secured Notes due August 2022 [Member] |  |  |  |  |  |  |
Long-term debt, gross | [3],[4] | 175,000 |  |  |  | 175,000 |
Supplier Facility Agreements [Member] |  |  |  |  |  |  |
Long-term debt, gross |  | $ 11,800 |  | € 11.2 |  | $ 0 |
[1] | As of September 30, 2023, the fair value of the Senior Secured Term Loan approximates book value.
[2] | As of September 30, 2023, the fair value (Level 2) of the 10.375% Senior Unsecured Notes due July 2028 was $263.3 million.
[3] | As of September 30, 2023 and December 31, 2022, the fair value (Level 2) of the Senior Secured Notes was $185.3 million and $177.3 million, respectively.
[4] | The $5.0 million restricted cash on the condensed consolidated balance sheet at September 30, 2023, represents the pro rata amount due for our next semiannual interest payment obligation on the 8.50% Senior Secured Notes.

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