Note 4 - Debt - Summary of Debt Outstanding (Details) - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 31, 2021
Debt discount and issuance costs		$ (5,964)	$ (7,115)
Total long-term debt		169,036	167,885
The 8.00% Senior Secured Notes due August 2022 [Member]
Long-term debt, gross	[1],[2]	$ 175,000	$ 175,000

[1] As of September 30, 2022 and December 31, 2021, the fair value (Level 2) of the Senior Secured Notes was $173.4 million and $177.6 million, respectively.

[2] The $5.0 million restricted cash on the condensed consolidated balance sheet at September 30, 2022, represents the pro rata amount due for our next semiannual interest payment obligation.