Note 10 - Troubled Debt Restructuring - Carrying Value of 2017 Notes (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Other long-term debt		$ 31
Total long-term debt	86,824	85,969
Senior Notes [Member] \| The 2017 Notes [Member]
Principal balance, 2017 Notes	85,938	85,938
Unamortized debt premium, 2017 Notes	886
Total long-term debt	$ 86,800	$ 85,900

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Balance Type:	credit
Period Type:	instant