Note 6 - Long-term Debt - Carrying Amount of the Company's Outstanding Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Convertible note instrument due March 5, 2020 Interest accrues at 7% per annum	$ 65,200
Other loans	45	$ 104
Debt discount and debt issuance costs, net of accumulated accretion	(304)	(4,358)
Total outstanding long-term debt	137,596	136,305
Less current portion	31	59
Total outstanding debt	137,565	136,246
Senior Secured Debt, Due March 25, 2021 [Member]
Senior secured debt due May 25, 2021 Interest accrues at 8% per annum	72,341	67,401
2020 Convertible Senior Notes [Member]
Convertible note instrument due March 5, 2020 Interest accrues at 7% per annum	$ 65,514	$ 73,158

Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company.

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